ChatGPT answers, unedited

Yes. There are several platforms built specifically around a visual workflow/canvas where you can mix email + SMS steps, delays, conditions, and branching.

• customer.io — Probably the closest match if the workflow editor itself is the priority. Its visual builder supports drag-and-drop multi-step journeys with email, SMS, push, in-app, branching, delays, triggers, and behavioral conditions. Customer.io Customer.io
• klaviyo.com — Strong option for ecommerce/B2C. Its visual Flow Builder lets you combine email + SMS + push with behavioral triggers, delays, branching, and A/B testing. Klaviyo DE Klaviyo DE
• activecampaign.com — More CRM/marketing-automation oriented. Its drag-and-drop automation builder can put email and SMS in the same workflow, with conditional paths and triggers. ActiveCampaign ActiveCampaign

If you're imagining something like this

New lead
   ↓
Send Email #1
   ↓
Wait 2 days
   ↓
Did they open?
   ├── YES → Wait 1 day → Send SMS
   │
   └── NO  → Send Email #2
                    ↓
                 Wait 3 days
                    ↓
                 Send SMS

All three can handle this kind of logic.

Customer.io is particularly oriented around that "draw the customer journey on a canvas" experience, whereas Klaviyo is especially geared toward ecommerce and ActiveCampaign toward CRM + sales/marketing automation. Customer.io Klaviyo DE ActiveCampaign

If you're looking to build a product that provides this kind of editor yourself, rather than looking for a marketing tool to use, that's a somewhat different question—I can also break down the existing platforms and the underlying workflow-editor architecture.

Yes. Several platforms do exactly this: visual, drag-and-drop customer journeys where email and SMS can be steps in the same workflow.

Strong options

• Customer.io — Probably the closest match if you want sophisticated lifecycle automation. Its visual workflow builder supports email, SMS, push, in-app, webhooks, delays, branching, events, segments, and conditional logic. Customer.io Customer.io

customer.io

• Klaviyo — Particularly strong for ecommerce. Its visual Flows builder lets you combine email + SMS + push with triggers, delays, conditional splits, and behavioral data. Klaviyo Klaviyo

klaviyo.com

• ActiveCampaign — More CRM/lead-automation oriented. Its drag-and-drop automation builder supports email and SMS in the same workflow, with triggers and actions based on customer behavior. ActiveCampaign

activecampaign.com

What the workflow can look like

For example:

                    ┌─ Email ─→ Wait 2 days ─→ SMS
New signup ─→       │
                    └─ If purchased ─→ Exit
                              │
                              └─ If not purchased
                                    ↓
                              Email #2
                                    ↓
                              Wait 3 days
                                    ↓
                              SMS #2

You can generally add things like:

• Triggers: signup, purchase, form submission, event, date, API event
• Waits: 1 hour, 2 days, until a particular date/event
• Branches: opened email? purchased? belongs to segment?
• Channels: email, SMS, push, in-app, etc.
• Goals/exits: stop the sequence when someone converts
• A/B tests
• Personalization
• Analytics for each step

If what you're imagining is specifically "Zapier meets a visual flowchart editor for building sophisticated email + SMS sequences", I'd look particularly closely at Customer.io and ActiveCampaign; if it's primarily ecommerce, Klaviyo is very relevant. Customer.io Klaviyo ActiveCampaign

If you tell me what you're trying to sell/use it for (SaaS, ecommerce, agency, lead gen, etc.) and roughly how many contacts, I can narrow it down to 2–3 platforms and compare workflow flexibility, SMS, email editor, integrations, and pricing.

Yes — several platforms do exactly this. The closest matches are:

• Customer.io — Probably the closest to what you described. Its visual workflow builder lets you drag-and-drop email, SMS, push, in-app messages, delays, conditions, branches, A/B tests, and event triggers onto one canvas. Customer.io Customer.io
• Klaviyo — Excellent if you're doing ecommerce/B2C. Its visual Flows builder supports email + SMS + push in the same flow, with behavioral triggers and branching. Klaviyo Klaviyo Help Center
• ActiveCampaign — Very strong for lead nurturing and CRM-oriented campaigns. You can visually build workflows containing both email and SMS, with triggers, conditions, and branching. ActiveCampaign ActiveCampaign
• HubSpot — Has a visual workflow builder and is particularly good if your campaigns need to interact with a CRM, sales pipeline, lead scoring, etc. HubSpot

If you're imagining something like this

New lead
   │
   ▼
Send Email #1
   │
   ▼
Wait 2 days
   │
   ▼
Opened email?
  /       \
YES       NO
 │         │
 ▼         ▼
SMS #1   Email #2
 │         │
 └────┬────┘
      ▼
  Wait 3 days
      │
      ▼
Purchased?
   /       \
 YES       NO
  │         │
  ▼         ▼
  End      SMS #2

Customer.io, Klaviyo, and ActiveCampaign can all do this natively. Customer.io is especially oriented around the visual journey itself, with an open canvas and drag-and-drop workflow blocks. Customer.io

If you're thinking about building a platform like this yourself, that's also an interesting product category — there are some fairly substantial differences between these tools in terms of workflow flexibility, event data, email/SMS infrastructure, and how much of the editor you can customize.

Yes. There are several platforms built specifically around visual, drag-and-drop customer journeys where you can mix email and SMS in the same sequence.

Best options

• Customer.io — Probably the closest match if you want sophisticated workflow logic. Its visual builder supports email + SMS + push + in-app, with delays, branching, behavioral triggers, A/B tests, and “wait until” conditions. Customer.io Customer.io

customer.io

• Klaviyo — Excellent for ecommerce/B2C. Its Flow builder lets you visually create sequences with email, SMS, and push, branching based on customer behavior, purchases, segments, etc. Klaviyo

klaviyo.com

• Iterable — More enterprise-oriented. Its Studio is a drag-and-drop journey builder supporting email, SMS, push, in-app, web push, and other channels. Iterable Support Iterable

iterable.com

What the workflow can look like

For example:

New lead enters
       ↓
   Send Email
       ↓
    Wait 2 days
       ↓
   Did they click?
     /       \
   YES        NO
    ↓          ↓
Send SMS    Wait 1 day
    ↓          ↓
   Wait      Send SMS
    ↓          ↓
Purchased?  Purchased?
  /    \       /    \
Yes    No     Yes    No
 ↓      ↓      ↓      ↓
Stop   Email  Stop   Sales alert

If you're building something SaaS/product-led, I'd look at Customer.io first. If you're primarily selling products through Shopify/ecommerce, Klaviyo is probably the better fit. Customer.io is particularly strong when your workflows depend on product events and user behavior rather than just purchases. Customer.io Customer.io

If you're actually looking to build a platform like this yourself, rather than use one, that's a different (and interesting) set of options—I can lay out the architecture and existing white-label/API solutions.

Yes. A few strong options:

• Customer.io — probably the closest fit: visual canvas, branching, delays, behavioral triggers, email + SMS in one workflow. Customer.io Customer.io
• Klaviyo — excellent for ecommerce; visual drag-and-drop flows combining email, SMS, and push. Klaviyo
• ActiveCampaign — visual automation builder specifically designed for email + SMS campaigns and complex nurture sequences. ActiveCampaign
• Omnisend — particularly good for ecommerce, with a drag-and-drop editor for email, SMS, web push, splits, and behavioral triggers. Omnisend

If you're looking for a “draw the workflow on a canvas” experience, I'd start with Customer.io or ActiveCampaign.

Yes. Several platforms do exactly this: visual, drag-and-drop workflows where email and SMS can be steps in the same sequence.

Best options

• activecampaign.com — Probably the closest match to what you're describing. Its visual automation builder lets you create branching sequences with email + SMS, delays, conditions, tags, scoring, etc. ActiveCampaign ActiveCampaign
• customer.io — Excellent if you want sophisticated, event-driven journeys. Its visual builder supports email, SMS, push, in-app, branching, wait conditions, behavioral triggers, and A/B testing. Customer.io Customer.io
• klaviyo.com — Particularly strong for ecommerce. You can visually build multi-step flows combining email, SMS, push, WhatsApp, etc., triggered by purchases, browsing, customer properties, and other behavior. Klaviyo UK Klaviyo UK
• hubspot.com — Good if you also want a full CRM and sales pipeline around the campaigns. Its automation is more CRM-centric.
• brevo.com — A simpler/lower-cost option for email + SMS automation if you don't need extremely sophisticated journey logic.

What the workflow can look like

For example:

New lead enters
      ↓
Wait 5 minutes
      ↓
Send Email #1
      ↓
Wait 2 days
      ↓
Did they open?
    ↙       ↘
  YES        NO
   ↓          ↓
Send SMS    Send Email #2
   ↓          ↓
Wait 3 days
      ↓
Did they purchase?
    ↙       ↘
  YES        NO
   ↓          ↓
Stop       Send SMS #2

You literally construct something like this visually rather than coding the sequence.

If you're looking for the most "workflow-builder-first" experience, I'd start with ActiveCampaign or Customer.io. If this is for an ecommerce store, I'd put Klaviyo at the top.

If you tell me what you're trying to automate (e.g. lead nurturing, cold outreach, ecommerce, SaaS onboarding, appointment reminders) and roughly how many contacts you have, I can narrow it down to the 2–3 best platforms and compare pricing/features.

Yes. There are several platforms built specifically around this model: visual, drag-and-drop customer journeys where email and SMS are steps in the same workflow.

Best options

• Customer.io — Probably the closest match to what you're describing. Its visual workflow builder lets you create multi-step journeys with email, SMS, delays, conditions, branching, events, and behavioral triggers on one canvas. Customer.io Customer.io

customer.io

• Klaviyo — Excellent if this is primarily e-commerce/marketing. Its Flow builder supports drag-and-drop email + SMS sequences, conditional splits, behavioral triggers, A/B tests, and prebuilt flows. Klaviyo AU Klaviyo Help Center

klaviyo.com

• Braze — More enterprise-oriented. Canvas is a visual journey builder for sophisticated cross-channel sequences involving email, SMS, push, in-app messaging, and behavioral branching. Braze Braze

braze.com

What this looks like

You can build something like:

New signup
    ↓
Wait 10 minutes
    ↓
Send Email #1
    ↓
Wait 2 days
    ↓
Did they open?
   /     \
 YES      NO
 ↓         ↓
Email #2   SMS #1
 ↓         ↓
Wait 3d   Wait 1d
    \      /
     ↓    ↓
   Purchase?
    /     \
  YES      NO
   ↓        ↓
Exit     Email #3

If you're looking for something specifically to build and sell as a product, rather than just use an existing marketing platform, that's also a very well-defined product category. Customer.io/Braze are particularly good references for the workflow-editor UX, while Klaviyo is a good reference for the marketing/e-commerce UX. Customer.io Klaviyo AU

If you tell me whether you're looking to use one of these platforms or build your own, I can give you a much more targeted comparison.

Yes. There are several platforms that do exactly this: visual, drag-and-drop workflows where email and SMS can live in the same sequence.

Best options

• Customer.io — probably the closest match to what you're describing. Its visual workflow builder lets you create triggers, delays, branches, conditions, and actions, with email + SMS in the same workflow. It also supports behavioral/event-based triggers and fairly sophisticated branching. Customer.io Customer.io

customer.io

• Klaviyo — especially good for e-commerce. Its Flows builder is drag-and-drop and supports email, SMS, and push in a single flow, with templates and behavioral triggers. Klaviyo AU

klaviyo.com

• HubSpot — strong if you also want a CRM, sales pipeline, lead scoring, etc. Its workflow automation can orchestrate marketing and CRM actions, although the experience is more CRM-centric than Customer.io/Klaviyo. HubSpot
• Braze — powerful for sophisticated, high-volume customer journeys across email, SMS, push, and in-app. More enterprise-oriented and generally more complex.

What the workflow can look like

For example:

New lead
   ↓
Wait 5 minutes
   ↓
Send Email #1
   ↓
Wait 2 days
   ↓
Did they open?
   ├── YES → Wait 3 days → Email #2
   │
   └── NO  → Send SMS
                 ↓
             Wait 2 days
                 ↓
             Email #2

You can then add things like:

• branching based on clicks, opens, purchases, or other events
• wait-until conditions
• time delays
• audience/segment conditions
• A/B tests
• exit conditions when someone converts
• email/SMS personalization
• different sequences based on customer attributes

If you're looking for the closest thing to a "Zapier/Make-style canvas specifically for customer messaging," I'd start with Customer.io. Its workflow builder is explicitly designed around this kind of multi-channel journey. Customer.io Customer.io

If you tell me what you're building (e.g. SaaS onboarding, lead nurturing, e-commerce abandoned cart, outbound sales, appointment reminders), I can narrow it down to the 2–3 platforms that fit best, including pricing and how their visual editors compare.

Yes. There are several platforms built specifically for creating email campaigns + SMS sequences with a visual workflow/journey builder (drag-and-drop flowcharts with triggers, delays, branches, and conditions). The best choice depends on whether you’re doing ecommerce, SaaS, lead nurturing, or general marketing automation.

A quick way to choose:

• Selling products online → Klaviyo

• Great for abandoned cart, browse abandonment, post-purchase, VIP, replenishment flows. Klaviyo
• Building lead funnels / sales sequences → ActiveCampaign or HubSpot

• Better if you need CRM fields, sales pipelines, lead scoring, and nurture campaigns. ActiveCampaign HubSpot Blog
• Building product onboarding, activation, retention journeys → Customer.io

• Strong when sequences depend on user behavior (e.g., “if they complete step 2, send message A; otherwise send reminder B”). Customer.io
• Running a mobile app or high-volume consumer product → Braze or Customer.io

• More sophisticated segmentation and cross-channel orchestration. Customer.io

If you’re looking for something that feels most like “draw a flowchart → connect steps → publish the sequence”, I’d start by looking at Customer.io, ActiveCampaign, or Klaviyo. Customer.io ActiveCampaign Klaviyo

If you tell me your use case (ecommerce, SaaS onboarding, agency/client campaigns, cold outreach, etc.) and approximate contacts/month, I can narrow it down.

Yes. There are several platforms built specifically for creating email campaigns + SMS sequences with visual drag-and-drop workflow editors. The best choice depends on whether you’re doing ecommerce, SaaS/customer lifecycle, lead nurturing, or sales outreach.

Strong options

If you want a true “flowchart canvas”

These are closest to a Zapier-style visual builder:

• Customer.io — great for “if user does X → wait → send message → branch based on behavior.”
• ActiveCampaign — probably the easiest general-purpose marketing automation canvas.
• Braze — best for sophisticated lifecycle journeys (mobile apps, large user bases).
• Omnisend — one of the simpler options if you specifically want email + SMS together. Its automation editor supports email, SMS, web push, triggers, splits, and A/B testing in one workflow. Omnisend

If your use case is…

• Abandoned carts, ecommerce promos, post-purchase flows: Klaviyo or Omnisend
• B2B leads, sales funnels, CRM workflows: ActiveCampaign or HubSpot
• SaaS onboarding, trial conversion, retention: Customer.io or Braze
• Enterprise omnichannel marketing: Braze or Iterable

A typical workflow these tools can handle:

New signup
   ↓
Send welcome email
   ↓
Wait 2 days
   ↓
Did they activate?
   ├─ Yes → Send product tips email
   └─ No  → Send SMS reminder
   ↓
Wait 7 days
   ↓
Move to nurture campaign

If you’re building something closer to a visual campaign builder product (like “I want to create my own Klaviyo/Customer.io”), the architecture is a different category — you’d usually look at workflow engines + messaging providers rather than marketing platforms.

Yes. There are several platforms that do exactly this: visual, drag-and-drop workflows where email and SMS can be steps in the same sequence, with delays, conditions, branching, triggers, etc.

Best options

My top 3

1. Customer.io — probably the closest to what you're describing

You get a canvas where you can do something like:

New Lead
   ↓
Wait 10 minutes
   ↓
Send Email #1
   ↓
Wait 1 day
   ↓
Did they open?
   ├── YES → Wait 2 days → Send SMS
   │                         ↓
   │                    Wait 3 days
   │                         ↓
   │                    Sales notification
   │
   └── NO → Send Email #2
              ↓
          Wait 2 days
              ↓
          Send SMS

Customer.io explicitly supports drag-and-drop workflows with email, SMS, branching, delays, event triggers, A/B tests, and other actions in the same visual workflow. Customer.io Customer.io

customer.io

2. Klaviyo — excellent if this is ecommerce

Klaviyo's Flows give you a visual drag-and-drop journey builder, and email, SMS, and push can all be combined in one flow. Klaviyo DE Klaviyo DE

For example:

Added to list
     ↓
Email
     ↓
Wait 24h
     ↓
Opened email?
   ↙       ↘
 Yes        No
 ↓           ↓
Wait 2d    Email
 ↓           ↓
SMS        Wait

klaviyo.com

3. ActiveCampaign — great if you also need CRM/sales automation

Its automation builder is also drag-and-drop and supports email and SMS within the same automation, along with triggers, conditions, scheduling, and other actions. ActiveCampaign ActiveCampaign

activecampaign.com

If you're actually looking to build a platform like this

If you're asking because you want to build your own SaaS with a visual email/SMS sequence editor, that's also very doable. The core product would essentially be:

Canvas editor → nodes → conditions/branches → delays → message composer → audience/data → execution engine

Something like React Flow for the canvas + your own workflow/execution backend can give you a product very similar to Customer.io/Klaviyo's workflow experience.

If that's what you're considering, I can also break down exactly how I'd architect and build the visual workflow editor + email/SMS execution engine.

Yes. There are several platforms built specifically around visual, drag-and-drop customer journeys where you can mix email and SMS in the same sequence.

Best options

• Customer.io — Probably the closest match if you want a true workflow/automation canvas. You can visually build multi-step journeys with email, SMS, push, in-app, WhatsApp, branching, delays, conditions, A/B tests, and event-based triggers. Customer.io Customer.io

customer.io

• Klaviyo — Excellent if this is primarily for ecommerce/marketing. Its Flow Builder lets you drag email and SMS steps onto a visual canvas, add delays/branches, and react to customer behavior. Klaviyo Klaviyo Help Center

klaviyo.com

• ActiveCampaign — More traditional CRM/marketing automation, but its visual automation builder supports complex email + SMS sequences, triggers, conditions, and scheduling. ActiveCampaign ActiveCampaign Help Center

activecampaign.com

What I'd pick

If you're imagining something like:

New lead enters → wait 1 day → Email → if opened → SMS → wait 3 days → if no reply → Email → branch based on behavior → sales notification

I'd look at Customer.io first. Its workflow builder is particularly suited to building these kinds of event-driven, branching journeys. Customer.io Customer.io

If you're running an online store, I'd lean Klaviyo.

If you're looking for something more like a CRM + sales automation system, I'd lean ActiveCampaign.

If you tell me what you're trying to build (e.g. lead nurturing, outbound sales, ecommerce, onboarding, appointment reminders), I can narrow it down to the 2–3 platforms that fit best and compare pricing, visual builder, SMS, email, branching, and integrations.

Yes. There are several platforms built specifically for creating email campaigns + SMS sequences using a visual workflow/canvas editor. The best choice depends on whether you’re doing ecommerce, SaaS/lifecycle marketing, sales follow-up, or general marketing automation.

Strong options

If you want the “draw a flowchart” experience

These are closest to a true visual journey builder:

• Customer.io — great if you want logic like:

• New signup → wait 2 days → if activated → send case study → else → send onboarding help
• Event-based triggers from your app
• Complex branching and personalization Sequenzy
• Omnisend — great for:

• Welcome sequences
• Abandoned cart flows
• Post-purchase follow-ups
• Email + SMS in the same canvas Omnisend
• Klaviyo — especially strong for ecommerce:

• Browse abandonment
• Customer segments
• Product recommendations
• SMS/email coordination

If you’re building sales follow-up sequences

Consider:

• GoHighLevel — popular with agencies and sales teams for lead funnels, SMS follow-up, email drips, pipelines, and automation workflows.
• HubSpot — better if you need CRM, sales teams, reporting, and marketing together.

If you want a more developer-friendly workflow canvas

Platforms like FlowingMail focus on visual, event-driven workflows with triggers, conditions, delays, and branching rather than traditional campaign builders. FlowingMail

A quick recommendation:

• Ecommerce: Klaviyo or Omnisend
• SaaS onboarding/lifecycle: Customer.io
• Small business + CRM: ActiveCampaign
• Agency lead follow-up: GoHighLevel
• Enterprise: Braze

If you tell me your use case (ecommerce, SaaS onboarding, lead nurturing, cold outreach, etc.) and approximate contact volume, I can narrow it down.

Yes — several platforms do exactly that. The key feature you’re looking for is usually called a visual journey builder, workflow builder, or automation builder.

Best options

My first look: Customer.io

If you're imagining something like:

NEW LEAD
   ↓
Send Email #1
   ↓
Wait 2 days
   ↓
Did they open?
  ↙       ↘
 YES       NO
  ↓         ↓
Wait 1d   Send Email #2
  ↓         ↓
Send SMS  Wait 3d
  ↓         ↓
   └──→   SMS
            ↓
       Did they buy?
        ↙       ↘
      YES       NO
       ↓         ↓
     EXIT     Follow-up

Customer.io is particularly good at this. Its visual workflow builder lets you drag-and-drop email, SMS, delays, conditions, branches, triggers, and other actions onto a canvas. Customer.io Customer.io

It also supports event/behavior-based triggers, so you can do things like "user viewed pricing page → wait → email → if they don't respond → SMS." Customer.io

Klaviyo is probably better if it's ecommerce

Klaviyo's Flows builder lets you create multi-step email/SMS sequences with branching and behavioral triggers. Its newer omnichannel campaign builder also puts email, SMS, push, and WhatsApp into a single visual interface. Klaviyo Klaviyo

ActiveCampaign is another strong choice

ActiveCampaign explicitly supports building email and SMS campaigns inside the same visual automation, with triggers, actions, timing, and branching. ActiveCampaign

If you're asking because you want to build a platform like this yourself, that's a slightly different question—and there are some interesting products/architectures to look at. I can also break down what the visual workflow editor, campaign engine, email/SMS infrastructure, and data model would look like to build one.

Yes. There are several platforms specifically built around a visual, drag-and-drop workflow editor where you can mix email and SMS in the same sequence.

Best options

• Customer.io — Probably the closest match if you want sophisticated, event-driven workflows. You can visually build journeys with email, SMS, push, in-app, webhooks, delays, conditions, and branching. Customer.io Customer.io

customer.io

• ActiveCampaign — Excellent if you want a more traditional marketing/CRM platform. Its visual automation builder supports email + SMS in the same workflow, with if/then logic, triggers, waits, and branching. ActiveCampaign

activecampaign.com

• Klaviyo — Particularly strong for e-commerce/DTC. Its Flow Builder lets you create visual sequences combining email, SMS, push, and other channels, with behavioral triggers and conditional splits. Klaviyo UK Klaviyo UK

klaviyo.com

If you're looking for a specific experience

For example, you could visually create:

New lead
   ↓
Send Email #1
   ↓
Wait 2 days
   ↓
Did they open?
   ├── YES → Wait 1 day → Send SMS
   │                    ↓
   │                 Wait 3 days
   │                    ↓
   │                 Sales call
   │
   └── NO → Send Email #2
              ↓
           Wait 3 days
              ↓
           Send SMS

All three above can handle this kind of branching workflow.

My quick take:
Customer.io if you want maximum workflow flexibility, ActiveCampaign if you want CRM + marketing automation, and Klaviyo if you're selling products online.

If you're actually thinking about building a platform like this yourself, I can also break down what the underlying visual workflow architecture would look like (nodes, triggers, branching, scheduling, email/SMS providers, etc.).

Yes. There are several platforms built specifically around this idea: a visual canvas where you connect email, SMS, delays, conditions, and branching into one customer journey.

Best options

• Customer.io — Probably the closest match if you want sophisticated workflow automation. Its visual builder supports email + SMS + push + in-app, delays, conditional branches, event-based triggers, A/B testing, and behavioral personalization. Customer.io Customer.io

customer.io

• Klaviyo — Excellent for e-commerce/B2C. Its Flows builder lets you visually combine email, SMS, and push with behavioral triggers and branching. Klaviyo Klaviyo

klaviyo.com

• Omnisend — More focused on straightforward marketing automation. Its drag-and-drop editor supports email, SMS, web push, splits, and behavioral triggers. Omnisend

omnisend.com

• Intempt — Interesting if you specifically want a single canvas across email, SMS, push, and in-app, with real-time behavioral triggers. Intempt

If you're thinking of building something like this

The basic experience you're describing is essentially:

           ┌─ Email ── Wait 2 days ──┐
Trigger ───┤                          ├─ Condition
           └─ SMS ──── Wait 1 day ───┘
                                      │
                            ┌─────────┴─────────┐
                          Yes                   No
                           │                     │
                        Email                  SMS

And the more sophisticated platforms let you add things like:

• Triggers: signup, purchase, form submission, event, date, API/webhook
• Actions: send email, send SMS, update contact, webhook
• Waits: 10 minutes, 2 days, until a date/event
• Conditions: opened email, clicked, purchased, attribute/segment
• Branches: if/else, multi-way splits, A/B tests
• Goals: purchase, activation, booking, reply, etc.
• Channel fallback: email → SMS if email isn't engaged
• Analytics: conversion/drop-off at each node

If you're looking for a platform to use rather than build, I'd shortlist Customer.io vs. Klaviyo. Customer.io is the stronger choice for complex, event-driven journeys; Klaviyo is particularly strong if this is ecommerce/customer marketing.

If you're asking because you want to build a SaaS/product with this kind of visual editor, that's a different (and interesting) question—I can break down what the architecture and existing competitors look like.

Yes. There are several platforms built specifically around this idea: a visual, drag-and-drop journey where email and SMS are just steps in the workflow.

Best options

Customer.io is probably the closest match to what you're describing. Its workflow editor is literally an open visual canvas where you drag in message/action blocks, add delays, conditions, branches, etc. Email and SMS can live in the same workflow. Customer.io Customer.io

For example, you could build:

                 ┌─ Email ── Wait 2 days ──┐
New lead ────────┤                          ├─ Wait ── SMS
                 └─ If opened → Email ──────┘
                            │
                            └─ If purchased → Exit

Customer.io specifically supports event/segment triggers, delays, true/false and multi-way branches, A/B tests, and cross-channel messaging including email and SMS. Customer.io Customer.io

ActiveCampaign is another strong choice if you want the visual workflow editor combined with a more traditional CRM/sales automation system. Its automation builder supports triggers, waits, if/then logic and branching, while its platform supports email, SMS and other channels. ActiveCampaign ActiveCampaign

Klaviyo is especially compelling if this is for an ecommerce business. Its flows can combine email, SMS, push, WhatsApp, etc., with behavioral triggers and branching. Klaviyo

If you're thinking about building something yourself

If what you're actually asking is "is there a platform where I can create these workflows almost like a flowchart, but with much more control over the UI/logic?", that's a slightly different category. There are also workflow/automation infrastructure products that can give you a visual node editor + email/SMS sending, rather than being a conventional marketing platform.

If you tell me whether this is for your own marketing campaigns or you're looking to build a SaaS/product with this functionality, I can point you toward the right options.

Yes. There are several platforms built specifically for creating email campaigns + SMS sequences with a visual workflow/journey editor. The best fit depends on whether you’re doing ecommerce, SaaS/customer lifecycle, sales outreach, or general marketing automation.

Strong options

Sequenzy Omnisend## If you want the “draw a flowchart and connect steps” experience

These are closest to what you’re describing:

• Omnisend — probably one of the easiest for a marketer: drag steps onto a canvas, add delays, conditions, splits, email, SMS, and behavior triggers. Omnisend
• Customer.io — better if you need sophisticated branching like: - “User signs up”
• “Wait 3 days”
• “If activated → send onboarding email”
• “If inactive → send SMS reminder”
• “If clicked → move to another journey”

Sequenzy- ActiveCampaign — strong for lead nurturing, sales funnels, tagging, and CRM automation. Sequenzy

My quick picks by use case

• Online store / Shopify: Klaviyo or Omnisend
• SaaS onboarding & lifecycle messaging: Customer.io
• Small business with sales CRM needs: ActiveCampaign
• Enterprise customer journeys: Braze
• All-in-one CRM + marketing: HubSpot

A few questions would narrow it down:

1. Is this for ecommerce, SaaS, lead generation, or something else?
2. Do you need two-way SMS conversations (replies handled in the platform) or just outbound texts?
3. Roughly how many contacts are you managing (1k, 10k, 100k+)?

Yes. There are several platforms built specifically around visual, drag-and-drop customer journey builders where email and SMS can live in the same sequence.

Best options

My first two to look at

Customer.io is probably the closest match if you're imagining something like:

Trigger → Email → wait 2 days → did they open? →
Yes: SMS → wait → email
No: email reminder → wait → SMS

Its visual workflow builder supports drag-and-drop blocks, delays, conditional branches, A/B tests, and channels including email and SMS. Customer.io Customer.io

customer.io

Klaviyo is particularly strong if this is for ecommerce. Its Flow builder lets you create drag-and-drop cross-channel sequences with email, SMS, and push, and it has a large library of prebuilt flows. Klaviyo Klaviyo

klaviyo.com

If you're thinking of building a platform like this

There are actually two somewhat different products you could mean:

1. A marketing platform you use — like Customer.io/Klaviyo, where you visually construct campaigns.
2. A platform you can build your own campaigns on top of — essentially a visual workflow engine + email/SMS infrastructure, potentially white-labeled or embedded into your own SaaS.

If you're asking because you want to build your own version of this, I can break down the existing products, their architecture, and what you'd need to build a visual email/SMS workflow editor yourself.

My first two to look at

Customer.io is probably the closest match if you're imagining something like:

Trigger → Email → wait 2 days → did they open? →
Yes: SMS → wait → email
No: email reminder → wait → SMS

Its visual workflow builder supports drag-and-drop blocks, delays, conditional branches, A/B tests, and channels including email and SMS. customer.io customer.io

Yes — several platforms do exactly this. The key distinction is whether you want email + SMS in the same visual journey, rather than separate automations.

Best options

• klaviyo.com — probably the best fit if you're doing e-commerce/B2C. Its visual Flows builder lets you drag-and-drop email, SMS, delays, conditions, branches, etc. into a single customer journey. Klaviyo Klaviyo
• customer.io — excellent if you want more sophisticated logic. Its visual workflow builder supports email, SMS, push, in-app, webhooks, branching, event triggers, wait conditions, and A/B tests. Customer.io Customer.io
• activecampaign.com — strong general-purpose marketing automation with a mature visual automation builder. Good if you want CRM/lead nurturing alongside campaigns.
• hubspot.com — better if the workflow needs to be tightly connected to a CRM, sales pipeline, forms, lead scoring, etc. It's more of an all-in-one business platform than a pure messaging tool.
• brevo.com — worth considering if cost is important and you want email + SMS/WhatsApp capabilities without going as deep as Customer.io.

What the workflow can look like

For example, you can visually build:

             New lead
                │
          Send Email #1
                │
             Wait 2d
                │
        ┌───────┴────────┐
        │                │
   Opened email?     Didn't open
        │                │
     Wait 1d          Send SMS
        │                │
   Send Email #2      Wait 1d
        │                │
        └───────┬────────┘
                │
        Purchased?
          /       \
        Yes        No
        │           │
      Stop       Email #3

If the thing you're specifically looking for is a "Zapier-like canvas" where you can visually connect email/SMS steps, conditions, delays, events, and branches, I'd start with Customer.io and Klaviyo. Customer.io is more flexible for complex/event-driven journeys; Klaviyo is generally nicer for e-commerce marketing. Customer.io Klaviyo

If you tell me what you're trying to build (e.g. SaaS onboarding, cold outreach, e-commerce abandoned cart, lead nurturing, etc.), I can narrow it down to the 3 best platforms and compare their visual builders, pricing, and SMS capabilities.

Yes. There are several platforms built specifically around visual, drag-and-drop customer journey builders where email and SMS can live in the same sequence.

Best options

• Customer.io — Probably the closest match if you want a true visual workflow canvas. You can combine email, SMS, push, in-app messages, delays, conditions, branches, A/B tests, and behavioral triggers in one journey. Customer.io

customer.io

• Klaviyo — Excellent if this is primarily marketing/e-commerce. Its flow builder supports email + SMS/text and other channels, with segmentation and behavioral triggers. Klaviyo

klaviyo.com

• Omnisend — Very straightforward visual automation editor specifically designed around email, SMS, and web push. Good choice if you want something relatively easy to operate. Omnisend

omnisend.com

• ActiveCampaign — A mature option with a strong visual automation builder, especially for lead nurturing and CRM-oriented campaigns. A recent comparison of visual workflow tools ranks its drag-and-drop builder particularly highly. Sequenzy

activecampaign.com

• User.com — Another interesting all-in-one option. Its visual builder can combine email, SMS, WhatsApp, push, chat, and CRM actions in the same flow. User

If you mean something like this

New lead
   │
   ▼
Send Email
   │
   ▼
Wait 2 days
   │
   ▼
Did they open?
  / \
yes  no
 │    │
 ▼    ▼
Wait  SMS
1 day  │
 │     ▼
 ▼   Wait 1 day
SMS    │
 │     ▼
 └──► Email

…and you want to literally drag those nodes around on a canvas, I'd shortlist Customer.io, Klaviyo, and Omnisend.

If you're actually looking to build a SaaS/product with this kind of editor rather than use one for your own campaigns, that's a different—and interesting—set of platforms/tools. I can also show you the best options for building your own visual email + SMS workflow editor.

Yes. There are several platforms built specifically for this, where you can visually lay out email + SMS sequences, delays, conditions, branches, and triggers on a canvas.

Best options

• Customer.io — Probably the closest match to what you're describing. Its visual workflow builder lets you drag-and-drop email, SMS, delays, branches, A/B tests, and behavioral triggers into a single journey. It also supports push, in-app, WhatsApp, webhooks, etc. Customer.io Customer.io

customer.io

• Klaviyo — Excellent if you're doing ecommerce/CRM marketing. Its Flows builder is visual and supports email + SMS in the same flow, with branching and behavioral triggers. Klaviyo Klaviyo Help Center

klaviyo.com

• ActiveCampaign — Another strong option if you want a traditional marketing automation platform with a visual automation canvas, CRM, email, and messaging.
• Braze — More enterprise-oriented. Very powerful for complex cross-channel journeys, but likely overkill for a smaller operation.

If you're imagining something like this

          ┌─ Email ──────────┐
          │                   │
Trigger → Wait 2 days → Opened?
                         │
                    ┌────┴────┐
                   YES        NO
                    │          │
                 SMS          Email
                    │          │
                 Wait 3d     Wait 1d
                    │          │
                    └────┬─────┘
                         ↓
                    Purchased?
                    /        \
                  YES        NO
                   │          │
                Exit       SMS #2

Customer.io and Klaviyo are probably the two I'd look at first. Customer.io is particularly good if the workflow is driven by product/user behavior and you want sophisticated branching; Klaviyo is particularly compelling for ecommerce and straightforward marketing automation. Customer.io Klaviyo

If you're actually looking to build a platform like this yourself, rather than use one, that's a different—and very interesting—question. I can also break down the architecture/UI needed to build a visual email + SMS workflow editor.

Yes. There are several platforms built specifically for creating email campaigns + SMS sequences using a visual workflow/journey builder. The best choice depends on whether you’re doing ecommerce, SaaS lifecycle marketing, sales follow-up, or something else.

Strong options

If you specifically want a “flowchart canvas” experience

These are closest to drawing boxes and connecting arrows:

• Customer.io — excellent for complex branching logic (e.g., “opened email → send SMS; ignored → wait 3 days → different email”). Sequenzy
• Omnisend — simpler and very practical for email + SMS ecommerce sequences. Omnisend
• ActiveCampaign — probably the most approachable visual automation builder for general marketing. Sequenzy
• Braze — if you need enterprise-grade journey orchestration.

Example workflow you could build

New lead enters list
        ↓
Send welcome email
        ↓
Wait 2 days
        ↓
Did they open?
   ↙          ↘
 Yes           No
 ↓             ↓
Send SMS     Send reminder email
 ↓
Wait 7 days
 ↓
Create sales task

Most of these platforms support:

• triggers (signup, purchase, form submission, API event)
• delays/waits
• if/else branches
• tags/segments
• A/B tests
• email templates
• SMS steps
• analytics

If you’re building sales follow-up sequences, ecommerce flows, or SaaS onboarding, the shortlist changes quite a bit.

Yes. There are several platforms built specifically for creating email campaigns + SMS sequences with a visual workflow/journey editor. The best fit depends on whether you’re doing ecommerce, SaaS lifecycle marketing, lead nurturing, or transactional messaging.

Strong options

If you specifically want a “flowchart canvas”

These are closer to a Zapier-style visual builder:

• Customer.io — excellent for “if user does X, wait Y, send message Z” logic. Sequenzy
• ActiveCampaign — very approachable for marketing teams.
• Omnisend — especially good if the journey starts from purchases, carts, browsing behavior, etc. Omnisend
• Drip — strong for ecommerce lifecycle flows.
• Mautic — if you want self-hosting/control.

Quick recommendations by use case

• Shopify / ecommerce: Klaviyo or Omnisend
• B2B lead nurturing: ActiveCampaign
• SaaS onboarding + lifecycle: Customer.io or Braze
• Enterprise customer journeys: Braze or Iterable
• Want maximum control/self-hosting: Mautic
• Need simple email + SMS campaigns without a huge setup: Omnisend or Bento

A typical workflow you can build in these looks like:

New signup
   ↓
Send welcome email
   ↓
Wait 3 days
   ↓
Did they activate?
   ├── Yes → Send advanced tips email
   └── No → Send SMS reminder
              ↓
          Wait 7 days
              ↓
          Add to nurture campaign

If you’re building something closer to HubSpot-style marketing automation, Klaviyo/ActiveCampaign/Customer.io are usually the shortlist. If you’re building a product that itself lets customers create these workflows, that’s a different category (workflow automation infrastructure).

Yes — several platforms do exactly this. If the key requirement is one visual canvas where you can mix email + SMS + delays + conditions + branching, I’d shortlist these:

My top two

1. Customer.io — best if you want a true journey builder

Customer.io has a drag-and-drop visual workflow builder where you can create multi-step journeys, add email, SMS, delays, conditional branches, triggers, A/B tests, and behavioral logic on the same canvas. customer.iowww.activecampaign.com

For example:

New Lead
   │
   ▼
Send Email #1
   │
   ▼
Wait 2 days
   │
   ▼
Did they open?
  /     \
YES      NO
 │        │
 ▼        ▼
SMS #1   Email #2
 │        │
 └───┬────┘
     ▼
 Wait 3 days
     │
     ▼
   Convert?
   /     \
 YES      NO

That's very close to what you're describing. Customer.io also lets you build the email itself with a visual block editor. docs.customer.io

Customer.io

2. ActiveCampaign — probably the easiest if you're doing traditional marketing/sales sequences

ActiveCampaign explicitly supports creating email and SMS campaigns within the same visual automation, with triggers, conditional/split actions, delays, and other steps. www.activecampaign.com

ActiveCampaign

One important distinction

If you're thinking about something like "build a flowchart of outbound sequences" rather than just newsletter automation, I'd lean toward Customer.io or ActiveCampaign.

If you tell me what you're trying to automate (e.g. SaaS onboarding, sales leads, abandoned carts, recruiting, outbound sales, appointment reminders), I can narrow it down to the 3 best platforms and compare their pricing/features.

Yes. What you’re describing is generally called a visual marketing automation / customer journey builder: you drag triggers, emails, SMS steps, delays, conditions, and branches onto a canvas.

A few strong options:

The two I'd look at first

Customer.io is probably the closest match if you mean something like:

                    ┌─ Email #1
                    │
Signup ──> Wait 1d ─┤
                    │
                    └─ SMS #1
                         │
                       Wait 2d
                         │
                   ┌─────┴─────┐
                Opened?       Didn't open?
                   │               │
                Email #2        SMS #2

Its current visual workflow builder supports drag-and-drop blocks, delays, conditional/multi-way branches, triggers, and email/SMS in the same journey. customer.io

Klaviyo is especially compelling if you're doing ecommerce. Its Flows builder lets you create drag-and-drop, cross-channel workflows containing email, SMS and push, with behavioral triggers and conditional splits. www.klaviyo.com

If you're building something yourself

If by "a platform" you mean you want to build your own platform that works this way, that's also very doable. The core product would essentially be:

Visual canvas → workflow graph → trigger/condition engine → message composer → email/SMS providers → analytics

And you could make the UI resemble a mix of Zapier + Klaviyo, where users literally drag:

• Trigger
• Send Email
• Send SMS
• Wait
• If/Else
• A/B Split
• Exit
• Goal
• Webhook
• Update contact

onto a canvas.

If that's what you're considering, I can also show you what the architecture/database model for building a Klaviyo-style visual email + SMS workflow platform would look like.

Yes. There are several platforms that do exactly this—visual, drag-and-drop customer journeys where email and SMS can be steps in the same sequence.

My top picks

If you mean something like this

You'd be able to visually construct:

New lead enters → Wait 10 min → Send Email → Wait 1 day → Did they open?

→ YES: Send SMS → Wait 2 days → Send Email 2
→ NO: Wait 1 day → Send Email 2 → Send SMS

That's particularly well supported by Customer.io. Its current workflow builder is a true drag-and-drop canvas with delays, conditional branches, behavioral triggers, and email/SMS in the same workflow. docs.customer.io

Klaviyo is probably the closest alternative if this is primarily for ecommerce. Its Flows builder supports email, SMS, and push in one flow, with behavioral triggers and branching. www.klaviyo.com

Omnisend is worth looking at if you want something easier to get started with; its automation editor explicitly lets you combine email, SMS, and web push, with drag-and-drop paths and splits. www.omnisend.com

If you're building a SaaS/product rather than looking for a marketing tool, I'd lean Customer.io. If you're selling products online, I'd lean Klaviyo.

If you tell me what you're selling + roughly how many contacts you have, I can narrow this down to the 2–3 best options and compare pricing, workflow flexibility, SMS capabilities, and ease of use.

Yes. There are several platforms built around visual workflow editors where you drag-and-drop triggers, delays, conditions, emails, and SMS steps into customer journeys. The best fit depends on whether you’re doing ecommerce, SaaS lifecycle marketing, sales outreach, or general CRM automation.

Here are some strong options:

A few that are especially close to what you described:

• Omnisend — probably one of the simplest if you want “draw a flow → add email → wait → send SMS → branch based on behavior.” Its automation editor supports email, SMS, web push, splits, and behavioral triggers. www.omnisend.comtrillet.ai
• Customer.io — better if you need complex logic like: “If user signs up → send email → wait 3 days → if they used feature X send SMS, otherwise send a different email.” www.sequenzy.com
• ActiveCampaign — a good all-around choice for lead nurturing, sales funnels, and CRM-connected sequences.
• Klaviyo — best known for ecommerce flows like abandoned cart, post-purchase, win-back, and VIP campaigns.
• Braze — for larger companies needing sophisticated customer journeys.

If you mean something more like Zapier/n8n-style canvas automation (nodes connected by lines) rather than a marketing automation builder, there are also newer workflow-first tools that combine email/SMS steps visually. trillet.ai

A quick recommendation:

• Small business / agency: ActiveCampaign or Omnisend
• Shopify/ecommerce: Klaviyo or Omnisend
• SaaS onboarding + lifecycle: Customer.io
• Enterprise: Braze
• Sales follow-up sequences: ActiveCampaign or HubSpot

If you tell me your use case (e.g., cold outreach, lead nurturing, ecommerce, SaaS onboarding, appointment reminders), I can narrow it down.

Yes. The category you’re looking for is omnichannel marketing automation / customer journey platforms. Several let you visually build a workflow where email and SMS are just different steps in the same sequence.

Best options

My first choice would be Customer.io if what you're picturing is literally a canvas like:

                ┌─ Email #1
                │
New lead ── Wait 2 days ──┤
                │
                └─ SMS #1
                       │
                   Wait 3 days
                       │
                  Clicked?
                 /        \
               Yes         No
                │           │
             Email #2     SMS #2

Customer.io's Visual Workflow Builder is specifically designed for this. You drag email, SMS, delays, conditions, branches, events, etc. onto a canvas, and email + SMS can live in the same workflow. customer.io

It also has a visual drag-and-drop email editor, so you don't need a separate email-design tool. docs.customer.io

Customer.io Visual Workflow Builder

Klaviyo is probably the strongest alternative if you're doing e-commerce. Its current platform supports multi-step campaigns across email, SMS, push and WhatsApp, with a visual campaign interface. www.klaviyo.com

Klaviyo Omnichannel Marketing

One important distinction

If you mean "I want to visually design the entire customer journey", look at Customer.io / Klaviyo / Braze.

If you mean "I want a simple drag-and-drop automation builder for leads, sales follow-ups, and CRM", ActiveCampaign or HubSpot may be a better fit.

If you tell me what you're trying to automate (e.g. lead nurturing, SaaS onboarding, abandoned cart, appointment reminders, outbound sales), I can narrow it down to the 2–3 platforms that fit best, including pricing and how their workflow editors compare.

Yes. There are several platforms built specifically around this.

Best fits

Customer.io is probably the closest match to what you're describing. Its Journeys product gives you a drag-and-drop canvas where you can visually build sequences with triggers, delays, conditions, branches, and different channels—including email and SMS in the same workflow. customer.iowww.klaviyo.com

Customer.io

ActiveCampaign is another strong choice if you want the workflow to connect closely to a CRM/sales pipeline. Its visual automation builder explicitly supports email and SMS within the same automation. www.activecampaign.com

ActiveCampaign

Klaviyo is especially compelling if this is for an online store. Its Flows builder lets you create cross-channel journeys using email, SMS, and push, with branching based on customer behavior. www.klaviyo.com

Klaviyo

If you're imagining something like this

             New Lead
                │
             Wait 5m
                │
          ┌─────┴─────┐
          │            │
       Email 1      SMS 1
          │            │
        Wait          Wait
        1 day         2 days
          │            │
       Opened?       Replied?
       /     \        /    \
     YES     NO     YES     NO
      │       │      │       │
   Email 2  SMS 2   Stop   SMS 2

Then Customer.io or ActiveCampaign would be my first two to investigate.

If you tell me what you're trying to sell/use the campaigns for (e.g. SaaS leads, real estate leads, e-commerce, appointment booking, cold outreach), I can narrow it down to the 2–3 best platforms and compare pricing, workflow flexibility, SMS capabilities, and ease of use.

Yes. There are several platforms built specifically around visual, drag-and-drop customer journeys where you can mix email and SMS in the same sequence.

Best options

Customer.io is probably the closest match to what you're describing. Its workflow builder is literally a drag-and-drop canvas where you can put email, SMS, delays, conditions, branches, events, segments, A/B tests, and other actions into one journey. customer.io

For example, you could visually build:

             ┌─ Email ── wait 2 days ──┐
Signup ──────┤                          ├─ If purchased → Exit
             └─ SMS ─── wait 1 day ────┘
                         ↓
                    Email #2
                         ↓
                   If clicked?
                    /       \
                  Yes        No
                  ↓           ↓
               SMS #2      Email #3

Klaviyo is especially strong if this is for an online store. Its Flows builder supports cross-channel journeys combining email, SMS, and push, with branching and behavioral triggers. www.klaviyo.com

Brevo is another good option if you want something simpler/less expensive. Its newer automation editor has a drag-and-drop canvas and supports email, SMS, branching, delays, and event-based triggers. help.brevo.com

If you tell me what you're trying to use it for (e.g. lead generation, SaaS onboarding, ecommerce, sales outreach, appointment reminders), I can narrow this down to the 2–3 platforms I'd actually consider, including pricing and how good their visual builder is.

Yes. There are several platforms that do exactly this—visual, drag-and-drop workflows where email and SMS can be mixed into the same sequence.

Best options

Customer.io is probably the closest match to what you're describing. Its workflow builder is literally a visual canvas where you drag in email, SMS, delays, conditions, branches, events, webhooks, etc. customer.io

For example, you could visually build:

New Lead
   ↓
Send Email
   ↓
Wait 2 days
   ↓
Did they open?
  /       \
YES       NO
 ↓         ↓
SMS       Email
 ↓         ↓
Wait 3d   Wait 1d
  \       /
   ↓     ↓
  Did they buy?
    /      \
  YES      NO
   ↓        ↓
  STOP    SMS

Klaviyo is particularly strong if you're selling products online. Its Flow Builder supports email, SMS, and push in a single flow, with branching and behavioral triggers. www.klaviyo.com

ActiveCampaign is another strong choice if you want the workflow tied closely to CRM/sales activity. Its current automation builder explicitly supports building email and SMS campaigns within the same visual workflow. www.activecampaign.com

Omnisend is worth considering if you want something simpler: its no-code editor lets you visually sequence email, SMS, and web push with behavioral branches. www.omnisend.com

If you're thinking about building a platform like this

There's also a distinction worth making: Customer.io/Klaviyo are marketing platforms with visual workflow editors, whereas you could build a more focused product whose core UX is essentially:

"Zapier/Make-style canvas + email/SMS campaign builder."

If that's what you're actually looking for, I can also break down the best existing platforms to use as inspiration, their workflow UX, APIs, pricing, and what it would take to build your own version.

Yes. There are several platforms built specifically around a visual, drag-and-drop journey builder where you can mix email and SMS in the same sequence.

Best options

My first two to look at

Customer.io is probably the closest match if what you're imagining is literally a canvas like:

Trigger → Email → Wait 2 days → SMS → If/else → Email → Wait → SMS

Its workflow builder lets you drag message/action blocks onto a canvas, add delays and branching, and put email and SMS into the same workflow. docs.customer.iowww.klaviyo.com

Customer.io visual workflow builder

Klaviyo is particularly good if you're selling products. Its Flows builder is also drag-and-drop and supports email, SMS, and push in a single flow, with lots of ecommerce triggers such as signup, cart abandonment, purchase, etc. www.klaviyo.com

Klaviyo Flows

If you're building a SaaS/product

I'd lean Customer.io. It is designed around behavioral events and customer journeys rather than primarily ecommerce. You can do things like:

User signs up
      ↓
Wait 1 day
      ↓
Email: Welcome
      ↓
Did they activate?
   ↙          ↘
 YES           NO
 ↓              ↓
Wait 7d       SMS: Need help?
 ↓              ↓
Email: Tips    Wait 2d
 ↓              ↓
Upgrade?      Email: Getting started

Customer.io also supports branching, A/B tests, time windows, webhooks, conversion goals, and other workflow actions. docs.customer.iowww.klaviyo.com

If you tell me what you're trying to automate (e.g. lead nurturing, SaaS onboarding, appointment follow-up, ecommerce, sales outreach), I can narrow this down to the 2–3 best platforms and compare pricing, workflow flexibility, SMS capabilities, and ease of setup.

Yes — there are several platforms built specifically around this.

Best options

Customer.io is probably the closest match to what you're describing. Its Journeys product gives you a drag-and-drop canvas where you can build something like:

                    ┌─ Opened email ──→ Wait 2 days ──→ SMS
                    │
Trigger → Email ────┤
                    │
                    └─ Didn't open ──→ Wait 1 day ──→ Email #2
                                           │
                                           └─ Clicked → Sales notification

You can combine email, SMS, delays, conditions, branching, events, segments, and other actions in the same visual workflow. customer.io

Customer.io Journeys

If you want something more marketing-friendly

ActiveCampaign is worth looking at. Its automation builder is explicitly designed for visually mapping email + SMS journeys, with triggers, actions, conditions, and timing. www.activecampaign.com

ActiveCampaign Automation Builder

For ecommerce, Klaviyo is especially strong: its Flows builder lets you create cross-channel email/SMS/push sequences with a drag-and-drop interface. www.klaviyo.com

Klaviyo Flows

If you're thinking about building a product/platform that does this, rather than looking for a tool to use, that's also a very well-defined product category. I can break down what the underlying architecture/UI would look like and which APIs you'd need for email + SMS.

Yes. There are several platforms built specifically for visual workflow automation where you can drag-and-drop triggers, delays, conditions, emails, and SMS steps into a customer journey.

Here are some of the stronger options:

A few recommendations by use case:

If you want a simple “draw the funnel” builder

• ActiveCampaign — probably the closest match to a marketing automation flowchart:
  • Trigger: “Someone fills out form”
  • Wait: “2 days”
  • Send email
  • If opened → send SMS
  • If clicked → assign sales task

If you run ecommerce

• Klaviyo or Omnisend
  • abandoned cart
  • post-purchase flows
  • VIP/customer segments
  • browse abandonment
  • SMS promotions

Omnisend specifically supports visual workflows with email, SMS, web push, triggers, splits, and A/B testing. www.omnisend.com

If you need complex branching logic

• Customer.io
  • “If user did X, but not Y, within 7 days…”
  • event-based journeys
  • product onboarding
  • lifecycle messaging

It is often chosen for more technical SaaS-style automation. www.sequenzy.com

If you want a CRM + campaigns in one place

• HubSpot
  • contacts
  • pipeline
  • forms
  • email automation
  • sales handoffs

A few newer/smaller tools also focus heavily on the “canvas” experience, such as platforms that let you literally connect blocks like trigger → wait → email → SMS → branch → exit. www.turboworkflow.com

If you tell me your use case (e.g., B2B lead nurture, ecommerce, SaaS onboarding, appointment reminders, real estate, agency clients, etc.) and approximate contacts/month, I can narrow it down.

Yes. There are several platforms built specifically for creating email campaigns + SMS sequences using a visual workflow/journey editor. The best choice depends on whether you’re doing ecommerce, SaaS/lifecycle marketing, lead nurturing, or sales outreach.

Here are some strong options:

A few more specialized options:

• Braze — enterprise customer engagement; very powerful multi-channel orchestration.
• Iterable — large-scale lifecycle marketing and experimentation.
• Delivra — email + SMS automation with visual workflow tools. www.delivra.com

Typical workflows you can build in these tools:

New lead signs up
        ↓
Send welcome email
        ↓
Wait 2 days
        ↓
Did they open?
     ↙       ↘
  Yes         No
  ↓           ↓
Send SMS   Send reminder email
  ↓
Wait 5 days
  ↓
Move to sales sequence

My rough recommendations:

• Shopify/ecommerce: Klaviyo or Omnisend
• B2B lead nurturing: HubSpot or ActiveCampaign
• SaaS onboarding: Customer.io or Braze
• Simple visual builder without enterprise complexity: ActiveCampaign, Omnisend, or Bento

If you mean a “draw boxes and connect arrows like Zapier/n8n, but for marketing sequences” specifically, I’d narrow the list to Customer.io, ActiveCampaign, Omnisend, and Klaviyo.

Yes. Several marketing automation platforms let you build email campaigns + SMS sequences using a visual workflow/journey editor (drag-and-drop nodes, triggers, delays, branches, conditions, etc.). The best fit depends on whether you’re doing ecommerce, SaaS/customer lifecycle, sales outreach, or general marketing.

A few examples of what you can build:

New signup
   ↓
Send welcome email
   ↓
Wait 2 days
   ↓
Did they open?
   ↙          ↘
 Yes           No
 ↓             ↓
Send SMS     Send reminder email
 ↓
Wait 5 days
 ↓
Offer / demo CTA

My shortlist by use case:

• Ecommerce: Klaviyo or Omnisend
• SaaS onboarding / product journeys: Customer.io or Braze
• Sales + CRM automation: ActiveCampaign or HubSpot
• Simple email + SMS sequences without enterprise complexity: Omnisend or Bento

If you mean a true flowchart-style canvas (like Zapier/Node-RED where you literally connect boxes), the strongest options are usually Customer.io, Braze, ActiveCampaign, and Omnisend. bentonow.comwww.omnisend.com

If you tell me whether this is for ecommerce, SaaS, sales outreach, or a newsletter/community, I can narrow it down.

Yes. There are several platforms built specifically around this kind of visual, drag-and-drop customer journey.

Best options

🥇 My first look: ActiveCampaign

ActiveCampaign has a visual automation builder where you can essentially draw:

Trigger → Email → Wait 2 days → Condition → SMS → Wait → Email → Exit

It supports branching based on behavior, and its current platform supports both email and SMS within the same automation. www.activecampaign.com

🧠 If you want really sophisticated workflows: Customer.io

Customer.io is particularly strong if you're thinking in terms of customer journeys rather than traditional email campaigns.

For example:

New Lead
   ↓
Send Email
   ↓
Wait 2 days
   ↓
 ┌───────────────┐
 │ Opened email? │
 └───────┬───────┘
       Yes ↓       ↓ No
      SMS       Send Email
       ↓            ↓
    Wait 3d       Wait 2d
       └──────┬─────┘
              ↓
         Conversion?
          ↙       ↘
        Yes        No
        ↓           ↓
       Exit       SMS

Customer.io explicitly supports drag-and-drop workflows, branching, delays, behavioral triggers, email, SMS, push, and in-app messaging. customer.io

🛍️ If this is for ecommerce: Klaviyo or Omnisend

Klaviyo has visual Flows combining email, SMS, and push in one journey, with behavioral triggers and branching. www.klaviyo.com

Omnisend is another particularly clean option. Its Automation Editor lets you visually combine email, SMS, web push, delays, splits, and behavioral triggers. www.omnisend.com

If you're asking because you want to build a product like this yourself, that's also very feasible—the core UX is essentially a node-based workflow editor + messaging engine + audience/event system. If that's what you're exploring, I can break down what the architecture and UI would look like.

Yes. There are several platforms built specifically around visual, drag-and-drop customer journeys where email and SMS can live in the same sequence.

Best options

Klaviyo is probably the closest match if you mean something like:

Trigger → Email → wait 2 days → check if opened → SMS → wait → check purchase → Email A/B

Its current campaign builder lets you visually orchestrate email, SMS, push, WhatsApp, etc. in one journey. www.klaviyo.com

Klaviyo

Customer.io is particularly strong if you want more sophisticated branching and event-based logic. Its visual builder supports email + SMS, delays, conditional branches, A/B tests, behavioral triggers, and "wait until" conditions. customer.io

Customer.io

And Spur is worth looking at if you specifically want a no-code canvas combining WhatsApp + email + SMS. www.spurnow.com

Spur

If you're building a SaaS/product

I'd narrow it to Customer.io vs Klaviyo:

• Customer.io → better for event-driven product/customer journeys
• Klaviyo → better for ecommerce, leads, purchases, customer profiles, and revenue attribution
• ActiveCampaign → better if the workflow is heavily tied to CRM/sales follow-up

If you tell me what you're trying to automate (e.g. lead nurturing, cold outreach, SaaS onboarding, abandoned cart, appointment reminders), I can give you the 3 best platforms and how their visual builders compare.