ChatGPT answers, unedited

Yes. If by “SMS tagging” you mean being able to tag/segment customers based on SMS behavior and loyalty attributes, there are a few strong options.

Best fit: Klaviyo + a loyalty platform

Klaviyo is probably the strongest choice for the advanced segmentation + email + SMS layer. You can combine behavioral data with loyalty data to create segments such as:

• VIP members with 5,000+ points
• Customers who haven't purchased in 90 days
• SMS subscribers who are close to the next tier
• Customers who redeemed a reward but haven't purchased again
• High-value customers who have never opted into SMS
• Members whose points are expiring
• Customers who clicked an SMS but didn't purchase

For the loyalty layer, Yotpo Loyalty & Referrals has a particularly deep Klaviyo integration. It syncs points, tiers, rewards, referrals and loyalty events into Klaviyo, which can then be used for both email and SMS flows. marketplace.klaviyo.com

Yotpo Loyalty & Referrals

Another strong setup: Attentive + Yotpo

If SMS is the primary channel, Attentive + Yotpo is worth considering. Yotpo can send loyalty attributes such as point balance and VIP tier into Attentive, where you can build dynamic segments and trigger SMS/email journeys from loyalty events. www.yotpo.com

If you want something simpler

Smile.io + Klaviyo is a nice combination if you don't need Yotpo's broader reviews/UGC ecosystem. Smile can sync points, VIP tiers and referrals into Klaviyo and use those attributes in email/SMS segmentation and flows. smile.io

My pick: If you're building a serious loyalty/CRM program, I'd start with Klaviyo + Yotpo. It gives you one segmentation/automation brain while loyalty data becomes part of the customer profile rather than living in a separate system.

If you tell me what ecommerce platform you're on (Shopify, Magento, custom, etc.) and exactly what you mean by “SMS tagging,” I can narrow this down to 2–3 platforms and explain how the tagging would actually work.

Yes. If by “advanced email segmentation + SMS tagging” you mean using loyalty attributes (points, tier, VIP status, purchase behavior, etc.) to segment customers and then target them through both email and SMS, there are a few strong options.

Best fit: Klaviyo + Yotpo Loyalty

Klaviyo + Yotpo is probably the closest match.

• Advanced segmentation: segment on loyalty tier, points balance, referral activity, purchase behavior, engagement, etc. Klaviyo's current segmentation system supports complex condition groups. Klaviyo API Docs
• Email + SMS: the Yotpo integration sends loyalty data into Klaviyo, where it can drive both email and SMS flows. Yotpo
• Loyalty event triggers: you can trigger messaging when someone earns points, redeems a reward, moves into a new tier, etc. Yotpo
• Personalization: loyalty information can be inserted into email and SMS, such as points balance or VIP tier. Klaviyo Klaviyo Help Center

For example, you could build segments like:

• Gold/VIP members + no purchase in 60 days
• 500+ points + SMS opted-in
• Points expiring within 14 days
• Top 10% spenders + engaged with email
• Silver members who have never redeemed
• Customers who earned 100+ points in the last 30 days
• VIP members who haven't opened an email but have engaged with SMS

Another strong option: Attentive + loyalty platform

Attentive is particularly strong if SMS is the primary channel. Its customer-data infrastructure can ingest custom attributes and events, turn them into segments, and use them in personalized SMS journeys. Attentive Attentive

For example, Thanx + Attentive can sync loyalty and transaction data into Attentive for segmentation and personalized SMS journeys. Attentive

How I'd compare them

One important distinction: if by “SMS tagging” you mean actual custom tags/attributes on a customer's SMS profile rather than simply SMS segmentation, I'd pay particular attention to Attentive's custom attributes/events capabilities. Attentive explicitly supports sending customer attributes into profiles and using them to create segments and personalize messages. Attentive

If you tell me what your loyalty program is built on (Shopify, Square, Toast, custom, etc.) and what you want the SMS tags to represent, I can narrow this down to the best 2–3 platforms for your setup.

Yes. If by “SMS tagging” you mean being able to tag/attribute customers based on loyalty status, points, VIP tier, purchases, SMS behavior, etc., there are a few strong options.

Best fits

1. Klaviyo + loyalty platform — my top pick

Klaviyo is particularly strong if advanced segmentation is the priority. It can segment profiles using virtually any customer data, including purchase behavior, engagement, loyalty status, CLV, churn risk, and other profile properties, and those segments can drive both email and SMS. Klaviyo Klaviyo Klaviyo Help Center

You can connect a loyalty system such as Smile, Yotpo Loyalty, or another loyalty provider and bring fields like:

• Loyalty tier: Gold, Silver, VIP
• Points balance
• Points expiring
• Rewards redeemed
• Referral activity
• Loyalty enrollment
• Purchase frequency/value
• SMS opt-in/status

into the customer profile. Klaviyo specifically documents using loyalty profile properties and events for segmentation and email/SMS flows. Klaviyo Dev Docs

For example, you could create:

VIP + SMS opted in + purchased in last 60 days + 500+ points

and send that group a special SMS campaign.

Smile's integration, for example, can sync points, VIP tier, and referral data into Klaviyo and trigger flows from loyalty events. Smile Help Center

klaviyo.com

2. Yotpo — best if you want loyalty + email + SMS more natively

Yotpo is interesting because its ecosystem combines Loyalty + Email & SMS. Its segmentation can use loyalty data, purchase behavior, engagement, RFM, and other customer attributes. Yotpo Yotpo

It can also trigger communications from loyalty events such as:

• VIP tier achieved
• Referral made
• Reward redeemed
• Points expiring

and Yotpo specifically supports loyalty-status updates via SMS. Yotpo Yotpo

yotpo.com

How I'd choose

One important distinction: “tagging” isn't necessarily the right architecture. For a sophisticated loyalty program, I'd favor a platform where loyalty attributes become dynamic customer properties/events, rather than manually maintained tags. That lets you build rules such as “Gold members with 1,000+ points who haven't purchased in 45 days and have SMS consent” and have the audience update automatically. Klaviyo is particularly well suited to this model. Klaviyo Dev Docs Klaviyo Help Center

If you tell me what loyalty platform/ecommerce system you're using (e.g. Shopify, Square, Lightspeed, custom), I can narrow this down to the best 2–3 options and explain exactly how the email/SMS tagging would work.

Yes. If by “SMS tagging” you mean storing/using customer tags or attributes in SMS audiences—e.g. VIP, Gold, birthday_month, points_500+, at_risk, prefers_sms—there are a few strong options.

Best fits

1. Klaviyo + loyalty platform — best for advanced segmentation

Klaviyo is particularly strong if your priority is sophisticated customer segmentation across email + SMS. It can segment on behavioral events, profile properties, engagement, purchase history, and custom attributes. help.klaviyo.com

It also has a formal framework for loyalty integrations, where a loyalty platform can push things like tier, points balance, member status, referral URL, and loyalty events into the customer profile. help.klaviyo.comdevelopers.klaviyo.comwww.yotpo.comsupport.yotpo.com

For example, you could build:

Gold/VIP members + 500+ points + no purchase in 60 days + SMS opted-in

and trigger a specific SMS/email journey.

2. Yotpo — best if you want loyalty + email/SMS under one ecosystem

Yotpo is probably the closest match to your description out of the box. Its Loyalty & Referrals product supports segmentation around loyalty status, points, tiers, referrals, customer attributes and tags, while its Email & SMS product provides SMS segmentation and messaging. support.yotpo.com

Yotpo specifically supports loyalty data flowing into SMS/email segmentation, including things such as VIP tier, point balance and points expiration. www.yotpo.com

3. Attentive + Yotpo — best if SMS is the primary channel

Yotpo can sync loyalty attributes into Attentive, allowing dynamic SMS segments based on loyalty attributes such as VIP tier and triggering journeys from loyalty events. support.yotpo.com

My recommendation

If you're building a serious loyalty/CRM program, I'd shortlist:

One important distinction: “tagging” can mean either static customer tags or dynamic attributes/events. For an advanced loyalty program, I'd favor the latter. You want the system to know things like tier=Gold, points=742, last_purchase=45 days, reward_expiring=true, rather than simply attaching a VIP tag.

If you tell me what platform you're currently using (Shopify, Salesforce, WooCommerce, custom, etc.) and what you mean by SMS tagging, I can narrow this down to the 2–3 best platforms and compare their exact segmentation/tagging capabilities and pricing.

Yes. If by “advanced email segmentation + SMS tagging” you mean you want loyalty attributes to become usable customer properties/tags for highly targeted email/SMS campaigns, there are several good options.

Best fit: Klaviyo + Yotpo Loyalty

This is probably the strongest setup if segmentation is the priority.

• Klaviyo handles sophisticated email/SMS segmentation, profiles, behavioral conditions, and automated flows. Its current segmentation tools support detailed behavioral and customer-property logic. help.klaviyo.com
• Yotpo Loyalty & Referrals feeds Klaviyo loyalty data such as points balance, VIP/tier status, rewards, referral activity, and expiration information. support.yotpo.com
• You can then create segments such as:
  • Gold/VIP members
  • 500+ points
  • Points expiring within 30 days
  • Hasn't redeemed a reward
  • Referred a friend
  • High-value customer + loyalty member
  • SMS subscriber + VIP
• Loyalty events can trigger both email and SMS flows. support.yotpo.com

Klaviyo
Yotpo Loyalty

Another strong option: Attentive + Yotpo

If SMS is the center of your loyalty strategy, I'd look closely at Attentive.

Yotpo can sync loyalty attributes and events into Attentive, allowing dynamic segments based on things like VIP tier and points balance, plus SMS/email journeys triggered by loyalty events. www.yotpo.com

For example:

VIP = Platinum + SMS opted in + points > 1,000 + last purchase > 60 days

That audience could receive a targeted SMS win-back campaign.

Attentive

The architecture I'd recommend

If you're building a fairly sophisticated loyalty program, I'd think of it as:

Loyalty platform → customer attributes/events → marketing platform → email + SMS

For example:

Yotpo Loyalty
→ points / tier / rewards / referrals
→ Klaviyo
→ advanced segments
→ email + SMS flows

The important distinction is that you don't necessarily need a loyalty platform that itself has amazing email segmentation. It's often better to use a dedicated loyalty engine + a powerful CRM/marketing engine.

If you tell me what platform you're currently using (Shopify, WooCommerce, Salesforce, etc.) and what you mean by “SMS tagging” (e.g. tags like VIP, redeemed, birthday, high spender, etc.), I can narrow this down to the 3 best platforms and compare their segmentation/tagging capabilities and pricing.

Yes. If by “advanced email segmentation + SMS tagging” you mean you want loyalty data to become usable attributes/tags for highly targeted email and SMS campaigns, there are a few strong options.

Best fit: Klaviyo + a loyalty platform

Klaviyo is probably the strongest marketing layer for this. It supports sophisticated customer segmentation and both email/SMS, while loyalty platforms feed it points, tiers, referral activity, redemption behavior, etc.

Two particularly good combinations:

• Klaviyo + Smile.io — Smile can sync points balance, VIP tier, referral URL, and loyalty events into Klaviyo. You can then build segments such as “Gold members with >500 points” or trigger flows when someone reaches a new tier. smile.io
• Klaviyo + Yotpo Loyalty & Referrals — probably the more powerful option if you need very granular loyalty segmentation. Yotpo sends loyalty attributes and events into Klaviyo, including points, tier, referrals, redemptions and expiration data, which can be used in both email and SMS flows. support.yotpo.com

For example, you could create segments like:

If you specifically mean “SMS tagging”—e.g. automatically applying a tag/property to a customer when they redeem, enter a tier, earn points, etc.—Klaviyo + Yotpo is especially interesting because loyalty events can trigger flows and loyalty attributes can become segmentation criteria. support.yotpo.com

Another option: Yotpo's broader stack

Yotpo is worth considering if you want loyalty + SMS/email + reviews/UGC from a more consolidated ecosystem. Its enhanced segmentation can combine purchase behavior, engagement, loyalty and other customer data, including segments such as top spenders, winback customers and customers with expiring points. www.yotpo.com

My ranking for your use case:

1. Klaviyo + Yotpo Loyalty — best for sophisticated segmentation and lifecycle automation
2. Klaviyo + Smile.io — excellent if you want a simpler, more plug-and-play loyalty layer
3. Yotpo's broader platform — attractive if you want to consolidate loyalty, reviews and messaging

If you tell me what ecommerce/CRM platform you're on (Shopify, WooCommerce, Salesforce, etc.) and what you mean by “SMS tagging”, I can narrow this down to 2–3 platforms and compare their segmentation, tags/custom properties, loyalty rules, SMS automation, and pricing.

Yes. If by “advanced email segmentation + SMS tagging” you mean you want loyalty attributes—VIP tier, points balance, purchase frequency, spend, engagement, etc.—to become usable for targeting both email and SMS, there are several good options.

Best fits

1. Klaviyo + a loyalty platform — probably the strongest overall

Klaviyo is particularly strong for the segmentation/CRM layer. You can build dynamic segments using purchase history, engagement, profile properties, predicted behavior, VIP status, and SMS consent, then use those segments across email and SMS. It also supports SMS-specific segments and can trigger flows when someone enters a segment. www.klaviyo.com

For example:

VIP Gold + 5,000+ points + hasn't purchased in 60 days + SMS opted-in

That could automatically become an SMS or email audience.

Klaviyo also explicitly supports VIP segmentation for rewards programs. help.klaviyo.com

Klaviyo

2. Yotpo — best if loyalty is the center of the system

Yotpo Loyalty & Referrals gives you actual loyalty-program functionality—points, tiers, rewards, referrals—and its segmentation can use purchasing behavior, customer attributes, marketing engagement, and loyalty activity. support.yotpo.com

It can then connect loyalty data to messaging platforms. For example, the Yotpo + Attentive integration can pass attributes such as point balance and VIP tier into Attentive and trigger SMS/email journeys based on loyalty events such as tier upgrades, referrals, and redemptions. www.yotpo.com

Yotpo Loyalty

3. Attentive + Yotpo — strong if SMS is especially important

Attentive combines SMS and email with a unified customer profile and supports dynamic segmentation using ecommerce, loyalty, and CDP data. www.attentive.com

This is attractive if your desired setup is something like:

Loyalty platform → customer/VIP/points data → Attentive → segmented SMS + email

Attentive

One important distinction

If by “SMS tagging” you mean something more specific—e.g.:

• customer texts VIP → tag them VIP
• customer texts BIRTHDAY → tag birthday_interest
• customer earns 500 points → tag/update points_500
• customer joins a loyalty tier → update tier_gold
• use those tags in both email and SMS segmentation

then Klaviyo is especially interesting, because SMS interactions/keywords can be used to create segments or update profile properties. Klaviyo specifically documents segments based on words subscribers have sent, as well as SMS VIP segments. help.klaviyo.com

My shortlist

If you tell me what your loyalty program is built on (or whether you're starting from scratch), I can narrow this down to the 2–3 platforms that best match your exact tagging/segmentation requirements.

Yes. If by “SMS tagging” you mean being able to tag/segment customers based on SMS behavior and then use those tags alongside loyalty status, there are a few strong options.

Best fits

1. Klaviyo — probably the strongest overall

• Very advanced email segmentation: purchase history, browsing, engagement, RFM, CLV, churn risk, custom properties, etc.
• Email and SMS use the same customer profile and segmentation engine.
• You can create segments such as:
  • VIP loyalty members + SMS opted in
  • Gold members who haven't purchased in 60 days
  • 500+ points + SMS engaged
  • Customers who clicked an SMS but haven't purchased
  • Loyalty members who prefer SMS over email
• Loyalty data can be synced into Klaviyo as profile properties/events, allowing points, tiers and loyalty activity to drive email/SMS campaigns. www.klaviyo.com
• It also supports SMS segmentation based on things like engagement, keywords customers texted, location, language, and SMS preference. help.klaviyo.com

2. Yotpo — strongest if loyalty is central

• Yotpo combines Loyalty + Email/SMS more natively.
• Its segmentation can use loyalty status, repeat purchases, CLV, RFM, engagement, and other customer attributes. www.yotpo.com
• Its SMS & Email product supports dynamic RFM segments and targeted SMS campaigns. support.yotpo.com
• Loyalty events such as points earned, rewards redeemed, tier changes, and points expiration can be used to drive communications. support.yotpo.com

My recommendation

If your priority is:

For example, if you're trying to build something like “Platinum members who have 1,000+ points, bought in the last 90 days, are SMS opted-in, and haven't engaged with email in 30 days”, Klaviyo is particularly well suited. Its segment engine can combine loyalty data with essentially any other customer/event data you feed it. www.klaviyo.com

If you tell me what ecommerce/POS platform you're using (Shopify, Square, Toast, Magento, Salesforce, etc.) and what loyalty program you're using, I can narrow this down to the best 2–3-stack options for your setup.

Yes. Klaviyo is probably the strongest fit if by “SMS tagging” you mean being able to attach loyalty attributes/tags to customer profiles and then use them in both email and SMS segmentation.

Best options

Klaviyo: Its segmentation can use virtually any customer/profile data, including loyalty points, tier, purchase history, engagement, custom properties, and predictive metrics, and segments update in real time. It supports both email and SMS from the same customer profile. www.klaviyo.com

For example, you could create:

• VIP + SMS opted-in
• Gold tier + no purchase in 60 days
• 500+ points + SMS engaged
• Silver members within 100 points of Gold
• Redeemed reward + hasn't purchased in 30 days

Klaviyo explicitly supports loyalty-platform integrations that sync things like loyalty tier and points balance into profiles for segmentation. developers.klaviyo.comhelp.smile.iosupport.yotpo.com

Klaviyo + Smile.io is particularly interesting if you need a dedicated loyalty engine. Smile can sync points balance, VIP tier, and referral URL into Klaviyo, and those attributes can drive email/SMS flows and audience segmentation. help.smile.io

Yotpo is another strong choice if loyalty itself is central to the product. Its segmentation can combine loyalty, lifecycle, purchase, RFM, and engagement data, while Yotpo Loyalty supports email/SMS communications and loyalty-specific segments. support.yotpo.com

My recommendation

If your priority is “very sophisticated segmentation + email + SMS + loyalty data”, I'd start with:

Klaviyo + Smile.io → maximum flexibility.

If your priority is “one ecosystem centered around loyalty”, look at:

Yotpo Loyalty + Yotpo Email/SMS → more vertically integrated.

If you tell me whether this is for Shopify, a custom ecommerce site, or another platform, I can narrow it down to the 2–3 best architectures and explain exactly how the loyalty tags/attributes would flow into SMS and email.

Yes. Several customer engagement platforms support advanced email segmentation + SMS tagging/segmentation for loyalty programs. The strongest options depend on whether you’re an ecommerce brand, retail business, or a broader membership program.

1. Klaviyo — best all-around for email + SMS segmentation

Klaviyo

Strengths

• Very advanced segmentation using:
  • purchase history
  • lifetime value
  • engagement behavior
  • loyalty tier
  • custom profile properties
  • predictive analytics
• Native email + SMS workflows
• Can tag customers with custom attributes (VIP level, points balance, membership status, etc.)
• Strong integrations with loyalty platforms like Yotpo and others. www.yotpo.comsupport.yotpo.com

Example segments:

• “Gold members with >2,000 points who haven’t purchased in 90 days”
• “SMS subscribers who opened 3+ emails but haven’t redeemed rewards”
• “VIP customers whose points expire in 14 days”

2. Attentive — strongest for SMS-heavy loyalty programs

Attentive

Strengths

• Built around SMS personalization
• Supports dynamic segments
• Can use loyalty data such as:
  • VIP tier
  • points balance
  • redemption history
  • referral activity
• Works with loyalty systems like Yotpo to trigger SMS/email journeys based on loyalty events. www.yotpo.comhelp.attentivemobile.com

Good for:

• retail brands
• restaurants
• fashion/beauty
• frequent purchase programs

3. Yotpo + Klaviyo/Attentive — best if loyalty is the core

Yotpo

Yotpo handles loyalty program logic:

• points
• tiers
• referrals
• rewards
• VIP status

Then it pushes those attributes into marketing platforms for targeting. For example, loyalty attributes like points balance and VIP tier can be used for personalized email/SMS campaigns. www.yotpo.comsupport.yotpo.com

4. Omnisend — good Shopify/ecommerce option

Omnisend

Strengths

• Email + SMS in one system
• Ecommerce-focused segmentation
• Good automation templates
• Often simpler than Klaviyo for smaller teams

Typical stack for an advanced loyalty program

Enterprise / high personalization

Loyalty engine: Yotpo or similar
↓
Marketing automation: Klaviyo
↓
SMS orchestration: Attentive (optional)

Simpler all-in-one

Klaviyo alone (email + SMS + segmentation)

If your goal is “tag customers by loyalty behavior and automatically send targeted email/SMS campaigns,” Klaviyo + a loyalty platform is usually the most flexible setup. If SMS is the primary channel, Attentive becomes more attractive. www.yotpo.comhelp.attentivemobile.com

I can also compare these by price, Shopify integration, B2B vs B2C, or enterprise scale if that’s what you’re evaluating.

Yes. If by “SMS tagging” you mean being able to attach loyalty attributes/tags to customer profiles and then use those attributes to target SMS as well as email, there are several strong options.

Best fits

1. Klaviyo + Yotpo Loyalty — probably the strongest fit for most ecommerce loyalty programs.
Klaviyo has sophisticated behavioral segmentation, and the Yotpo integration syncs loyalty properties such as points balance, VIP tier, rewards, referrals, and expiration data into customer profiles. Those attributes can then drive both email and SMS flows. support.yotpo.com

For example, you could create segments like:

• VIP + SMS opted-in
• 500+ points + hasn't purchased in 90 days
• Gold tier + reward expiring within 7 days
• Referred 3+ customers + high lifetime value

Klaviyo's current segmentation capabilities are specifically designed for combining behavioral/customer data into sophisticated segments. help.klaviyo.com

2. Attentive + a loyalty platform — particularly good if SMS is the primary channel.
Attentive can use customer, ecommerce, and loyalty data to create dynamic segments and personalize SMS/email. It also has integrations with loyalty platforms such as LoyaltyLion. www.attentive.com

3. Bloomreach Engagement — best if you need very advanced customer-data segmentation.
It supports real-time segmentation, RFM/loyalty segmentation, and targeted SMS alongside email. It's more of an enterprise CDP/engagement platform than a straightforward email/SMS tool. www.bloomreach.com

My recommendation

If you're a Shopify/ecommerce brand, I'd start with Klaviyo + Yotpo Loyalty. The combination gives you a clean division of responsibilities:

Yotpo: loyalty program, points, tiers, rewards, referrals
→ Klaviyo: customer profiles, advanced segmentation, email + SMS automation

The integration is currently capable of triggering flows from loyalty events and building segments from loyalty properties. support.yotpo.comhelp.klaviyo.comwww.bloomreach.com

If you tell me what you mean by “SMS tagging” (e.g. tagging a customer when they reply, tagging based on a keyword, tagging based on loyalty tier, or maintaining SMS-specific customer attributes), I can narrow this down to the 2–3 platforms that actually support that workflow.

Yes. Klaviyo + a loyalty platform is probably the strongest fit if by “advanced segmentation + SMS tagging” you mean:

• Segment customers by VIP tier, points balance, purchase frequency, AOV, churn risk, engagement, etc.
• Use those segments across email and SMS.
• Trigger SMS/email when loyalty events occur—e.g. points earned, reward redeemed, tier upgraded, points about to expire.
• Maintain customer-level loyalty attributes that can be used as segmentation criteria. Klaviyo supports real-time, cross-channel segmentation and SMS-specific segments. www.klaviyo.comdevelopers.klaviyo.com

Best combinations

Klaviyo + Yotpo Loyalty stands out. Yotpo can sync loyalty attributes such as points, VIP tier, expiration, and referral activity into Klaviyo, while loyalty events can trigger automated email and SMS flows. www.klaviyo.comwww.yotpo.comdevelopers.klaviyo.com

For example, you could create segments like:

Gold/VIP members + 500+ points + haven't purchased in 60 days + SMS opted-in

Then automatically send them an SMS incentive, while sending a different email to the same underlying segment. Klaviyo specifically supports combining loyalty status with behavioral and transactional data for this type of targeting. www.klaviyo.comdevelopers.klaviyo.com

One nuance: if by “SMS tagging” you mean literally applying/removing tags to SMS subscribers based on loyalty behavior, rather than just segmenting and triggering SMS based on loyalty attributes, I'd evaluate the platforms somewhat differently.

If you tell me what type of loyalty program you run (retail, restaurant, ecommerce, etc.) and what you mean by “SMS tagging,” I can narrow this down to the 2–3 best platforms and compare their actual capabilities/pricing.

Yes. Klaviyo is probably the strongest fit if by “SMS tagging” you mean tagging/segmenting customers based on SMS behavior, loyalty status, or SMS keywords.

Best options

Klaviyo can segment on virtually any customer property or event, including purchase history, engagement, loyalty points, channel preferences, and custom properties. Its segments update in real time and work across email and SMS. www.klaviyo.com

It also supports SMS-specific segmentation—for example, SMS VIPs, highly engaged SMS subscribers, people who opted in through particular keywords, or subscribers with particular SMS preferences. help.klaviyo.com

The particularly useful part for loyalty programs is that loyalty platforms can pass things like loyalty tier, points balance, enrollment status, and loyalty events into Klaviyo, letting you build segments such as:

• Gold members who haven't purchased in 60 days
• VIPs with 500+ points
• Members within 100 points of the next tier
• SMS subscribers who haven't redeemed a reward
• Customers who joined the loyalty program but haven't opted into SMS
• High-value customers who are SMS-engaged but haven't purchased recently

Klaviyo explicitly documents tier/points-based segmentation such as “VIPs who haven't ordered in 30 days” and “members with more than 500 points and no recent redemption.” developers.klaviyo.com

One particularly compelling alternative: Yotpo

If you're on Shopify, Yotpo is worth serious consideration because its products combine Loyalty & Referrals + SMS & Email. Yotpo supports loyalty segmentation and SMS/email segmentation, including RFM-based audiences. support.yotpo.com

Yotpo's loyalty segmentation can incorporate purchase behavior, engagement, campaign data, and loyalty data, with predefined audiences such as top spenders, winback customers, and customers with points about to expire. www.yotpo.com

My take:

• If you want the most sophisticated segmentation/automation engine → Klaviyo.
• If you want loyalty + SMS + email tightly integrated in one ecosystem, especially on Shopify → Yotpo.
• If SMS is the center of your retention strategy → Attentive is another one to evaluate.

If you tell me your ecommerce platform (Shopify, WooCommerce, Magento, custom, etc.) and what you mean by “SMS tagging” (e.g. tags from keywords, customer behavior, loyalty tier, or manual tags), I can narrow this down to the best 2–3 platforms.

Yes. If by “SMS tagging” you mean tagging/segmenting customers based on SMS behavior and loyalty status, there are a few strong options.

Best fits

1. Klaviyo — probably the strongest overall

• Advanced, real-time segmentation across email and SMS.
• Segments can use purchase history, engagement, predicted churn/CLV, SMS behavior, loyalty status, etc. www.klaviyo.com
• Loyalty platforms can push attributes such as points balance, VIP tier, member status, and referral activity into Klaviyo, where they become usable in segments and automations. www.klaviyo.comdevelopers.klaviyo.comsupport.yotpo.comwww.yotpo.com
• SMS-specific segments include things like SMS VIPs, highly engaged SMS subscribers, SMS preferences, and high-intent SMS shoppers. help.klaviyo.com

Klaviyo

2. Yotpo — particularly good if loyalty is central

• Combines Loyalty + Email + SMS in the same ecosystem.
• Can segment using loyalty/referral data, customer behavior, RFM, and SMS attributes. support.yotpo.com
• You can build segments such as Gold members + SMS subscribers + purchased in last 60 days.
• Yotpo also supports loyalty data flowing into Klaviyo, Attentive, and other messaging platforms. www.yotpo.com

Yotpo

What I'd choose

If your requirement is something like:

“Give me sophisticated customer segmentation, then use loyalty attributes and SMS engagement to automatically target people.”

I'd lean Klaviyo + a dedicated loyalty platform such as Yotpo Loyalty. Klaviyo is particularly strong as the customer-data/segmentation layer, while the loyalty platform owns points, tiers, rewards, and referrals. Klaviyo explicitly supports this architecture. www.klaviyo.comdevelopers.klaviyo.comsupport.yotpo.comwww.yotpo.com

For example, you could create:

• VIP + SMS opted in + no purchase 45 days
• 500+ points + SMS engaged
• Silver tier + within 100 points of Gold
• Reward issued + hasn't redeemed + SMS subscriber
• High CLV + SMS clicked recently + email inactive
• Points expiring in 7 days + SMS opted in

If you tell me what loyalty program you're using (or planning to use), your ecommerce platform (Shopify, WooCommerce, etc.), and what you mean by “SMS tagging,” I can narrow this down to the 2–3 platforms that best fit your exact setup.