ChatGPT answers, unedited

If your main goal is “someone buys merch → automatically send them useful follow-up emails”, I’d look at Omnisend first.

Best free options

Omnisend is particularly compelling because its free tier includes actual ecommerce workflows rather than just newsletter sending, including post-purchase automation. www.shopify.com

For a creator, I'd set up something like:

Purchase → thank-you email → 7 days later “how are you liking it?” → 21–30 days later related product/release → occasional creator newsletter.

If you're on Shopify, Shopify Email is probably the simplest $0 option, especially if you don't need sophisticated flows. It gives you a much larger free sending allowance, while Omnisend gives you more ecommerce-specific automation. www.shopify.com

My pick:

• Under ~250 customers: Omnisend
• Thousands of subscribers but relatively few emails: Brevo
• Shopify + simple setup: Shopify Email
• Creator newsletter is the priority, merch is secondary: MailerLite

If you tell me which store you use (Shopify, WooCommerce, Etsy, Fourthwall, Printful, etc.) and roughly how many subscribers/customers you have, I can narrow it down to the best free setup for you.

For a creator selling merch, I’d look for ecommerce triggers (purchase made, abandoned cart, shipping update, repeat buyer) rather than just a newsletter tool. The best free options are:

My pick by creator stage:

• Just starting merch sales (a few hundred customers): Brevo — simple, cost-conscious, and enough automation for “thanks for your order,” “here’s a discount,” and “come back for the next drop.” help.brevo.comhelp.brevo.com
• You’re doing regular drops, limited editions, or want to maximize revenue: Klaviyo — better for segments like “bought a hoodie but not the new tee,” VIP fans, and abandoned carts. help.klaviyo.com
• You mostly need a fan newsletter: Mailchimp is still a familiar option.

For a merch creator specifically, I’d set up these automations first:

1. Post-purchase thank you (immediately after order)
2. Shipping follow-up (after delivery: ask for a photo/review)
3. Second purchase incentive (7–30 days later)
4. Drop announcement to past buyers
5. VIP list for your biggest fans

If you tell me what you sell through (Shopify, Etsy, Fourthwall, Printful, WooCommerce, etc.) and roughly how many subscribers/customers you have, I can narrow it down.

Yes. If your goal is “someone buys merch → automatically send them follow-up emails”, I’d narrow it to these:

🥇 Best overall: MailerLite

Probably the best fit if you're a creator who wants something simple.

• Free plan available (currently up to 500 subscribers / 12,000 emails per month). www.shopify.com
• Integrates directly with Shopify and WooCommerce. www.mailerlite.com
• Can trigger automations based on a purchase, a specific product, product category, or purchase frequency. www.mailerlite.com
• You could build something like:

Purchase → 3 days later “Hope you're loving it” → 14 days later “Check out the new drop” → 30 days later “Here's 10% off your next order.”

One caveat: customers generally need to have consented to marketing emails for these marketing automations to trigger. www.mailerlite.com

🥈 If you're on Shopify: Shopify Email

If your merch store is Shopify, this is arguably the simplest free option because it's already inside Shopify. Shopify currently includes 10,000 free emails/month and supports basic automated flows. www.shopify.com

🥉 If you want more ecommerce-focused automation: Omnisend

Omnisend is more purpose-built for ecommerce—abandoned carts, post-purchase sequences, segmentation, etc. Its free tier is much smaller, though: current comparisons put it around 250 contacts / 500 emails per month. www.shopify.com

My pick for a creator: Start with MailerLite unless your merch is on Shopify, in which case I'd first try Shopify Email. You can always graduate to Omnisend/Klaviyo when your store gets enough volume to justify more sophisticated automation.

If you tell me what ecommerce platform you use (Shopify, Etsy, WooCommerce, Fourthwall, Spring, etc.), I can tell you the best free option specifically for that setup.

For a creator selling merch, Brevo is probably the best free starting point.

Brevo has a $0 plan with 300 email sends/day, up to 100,000 stored contacts, and—importantly—marketing automation for up to 2,000 contacts. help.brevo.com

Why I'd pick Brevo

• Shopify + WooCommerce integrations: it can sync customers, products, orders, and purchase activity. help.brevo.comhelp.brevo.com
• Post-purchase automation: you can trigger emails after someone buys, including thank-yous, feedback requests, and product recommendations. help.brevo.com
• Abandoned-cart follow-ups: useful if you're trying to turn merch browsers into buyers. help.brevo.com
• Transactional emails: it can also handle things like order confirmations and shipping-related messages, depending on your setup. help.brevo.comhelp.brevo.com
• Good for a growing creator business: the free plan's 2,000-contact automation limit is more relevant to your use case than simply having a large subscriber-storage limit.

Mailchimp is the other obvious option. It has Shopify, WooCommerce, Big Cartel, and other ecommerce integrations and supports order-based automations. mailchimp.com But I'd lean Brevo if keeping automation on the free tier is the priority.

If you tell me which merch platform you use (Shopify, WooCommerce, Fourthwall, Etsy, Big Cartel, etc.), I can tell you which free option will work best with that exact setup.

Yes — for a creator + merch store, I’d start with MailerLite.

Best free options

MailerLite is particularly attractive because its automation system can trigger from a purchase and send a thank-you/follow-up sequence, and its official documentation says ecommerce triggers work with Shopify, WooCommerce, BigCommerce, and PrestaShop. www.mailerlite.com

For example, you could set up:

Customer buys merch → immediately: “Thanks for supporting me!”
+3 days: “Here’s how to get the most out of your merch”
+14 days: “Want to see what I’m creating next?”
+30 days: Early access to your next drop

That combination is especially useful for a creator because you can keep your newsletter audience and customers in the same system, while segmenting buyers separately.

MailerLite

My pick: Start with MailerLite if you're trying to spend $0. If your store becomes a major part of your business and you want sophisticated abandoned-cart, product-based, and customer-segmentation flows, I'd eventually look at Klaviyo or Omnisend instead. Ecommerce specialists generally provide deeper purchase-event automation. smtpedia.com

If you tell me which store you're using (Shopify, WooCommerce, Fourthwall, Etsy, etc.), I can narrow it down to the best free option for your exact setup.

Yes — for a creator selling merch, Omnisend is probably the best free fit if your main goal is automated post-purchase emails.

🥇 Best overall: Omnisend

Its free plan currently includes 500 emails/month to up to 250 contacts, and importantly, ecommerce automations are available on the free tier. support.omnisend.com

You can connect stores including Shopify, WooCommerce, BigCommerce, Wix, Ecwid, and others. Once connected, it syncs orders, customers, and products so you can trigger emails based on purchases. support.omnisend.comhelp.brevo.com

For example, you could set up:

Order placed → 2 days later:
“Thanks for supporting my merch!”

5 days later:
“How are you liking your new hoodie? Leave a review.”

14–30 days later:
“New drop just landed — thought you might like this…”

Omnisend specifically has an Order Follow-up automation for thank-you emails, review requests, and repeat-purchase offers. support.omnisend.com

🥈 Best alternative: Brevo

Brevo's free plan gives you 300 emails/day, up to 100,000 stored contacts, and marketing automation for up to 2,000 contacts. help.brevo.com It also integrates with Shopify and WooCommerce; its WooCommerce integration can sync orders/products and trigger post-purchase workflows. help.brevo.com

My pick for you: Omnisend if you're primarily a merch/ecommerce creator. It's more purpose-built around store events and post-purchase automation, whereas Brevo is more of a general-purpose email/CRM platform.

One caveat: if you expect more than ~250 customers on your email list, Omnisend's free tier will become restrictive pretty quickly because the 250-contact/500-email limits apply to the free plan. support.omnisend.com

If you tell me whether you sell through Shopify, WooCommerce, Etsy, Fourthwall, Stan, Spring, or something else, I can tell you which free option integrates best with your exact merch setup.

If you’re a creator selling merch, Omnisend is probably the best free option right now—especially if your goal is automated post-purchase/order follow-ups, not just newsletters.

🥇 Best fit: Omnisend

• Free: $0/month, up to 250 contacts and 500 emails/month. support.omnisend.com
• Connects directly with Shopify, WooCommerce, BigCommerce, Wix, and other ecommerce platforms. support.omnisend.com
• Can automatically trigger emails after someone buys—e.g. thank-you → review request → related product → discount for their next order. Order Follow-up automation is available on all plans, including Free. support.omnisend.com
• Also has abandoned-cart, welcome, browse-abandonment, and reactivation workflows. support.omnisend.com

That makes it particularly good for a creator merch business where you might want something like:

Customer buys merch → 3 days later: “Hope you're loving it!” → 10 days later: review request → 30 days later: “New drop / here's 10% off your next order.”

Other free options

Brevo — good if you want a broader email/CRM platform. It supports ecommerce tracking and abandoned-cart automation, but its ecommerce setup is somewhat more involved. help.brevo.com

Mailchimp — very polished for newsletters and creator audiences, but ecommerce automation is less attractive on the free tier; for example, its classic abandoned-cart automation is tied to paid accounts that have the relevant feature access. mailchimp.com

My pick: Omnisend if ecommerce/order follow-ups are the priority; Brevo if you care more about having a general-purpose CRM/email platform.

If you tell me which store you use (Shopify, WooCommerce, Etsy, Fourthwall, Spring, etc.) and roughly how many subscribers you have, I can narrow it down to the best actually-free setup for you.

Yes. For a creator selling merch, I’d narrow it to Klaviyo, Brevo, or Omnisend rather than a generic newsletter platform.

My pick: Klaviyo

Klaviyo is probably the best fit if your goal is “someone buys merch → automatically follow up with them.”

Its free tier currently gives you up to 250 profiles and 500 email sends/month, and it includes ecommerce integrations plus automations. www.klaviyo.comapps.shopify.com

You can build flows like:

• Order placed → thank-you email
• A few days later → “How are you liking it?”
• After delivery → review/UGC request
• 30–60 days later → recommend another product
• Abandoned cart → reminder
• VIP buyers → early access to new merch

It integrates particularly well with Shopify, including syncing Shopify customer/order data. www.klaviyo.comapps.shopify.com

If you want the most generous free option: Brevo

Brevo is worth considering if you expect your contact list to get large but won't email everyone constantly. Its WooCommerce integration, for example, can sync customers/orders and trigger post-purchase and abandoned-cart workflows. help.brevo.com

The big advantage is that Brevo's model is much less restrictive on stored contacts than Klaviyo's free 250-profile limit.

Quick comparison

One important distinction: if by “order follow-ups” you mean marketing emails after a purchase, Klaviyo is excellent. If you mean transactional emails like order confirmations/shipping notifications, your ecommerce platform may already handle those, and you don't necessarily want to replace them with a marketing platform.

If you tell me what store you're using (Shopify, WooCommerce, Fourthwall, Spring, Gumroad, etc.) and roughly how many subscribers/customers you have, I can tell you which free option is the best fit.

Yes — for a creator who sells merch, I’d prioritize e-commerce triggers (purchase, product purchased, abandoned cart) rather than just a newsletter platform.

My top free picks

🥇 I'd pick MailerLite if you're starting out. Its free tier includes visual automations, and its Shopify/WooCommerce integrations can sync customers and store data. For WooCommerce, you can trigger automations based on purchases, specific products, categories, purchase frequency, and abandoned carts. www.mailerlite.com

That means you could build flows like:

Someone buys merch →

1. Thank-you email
2. Shipping/fulfillment follow-up
3. "How are you liking it?" email
4. Related merch recommendation
5. 30-day "come back for something new" email

One important caveat: marketing follow-ups generally require the customer to have opted into marketing emails; don't assume you can automatically add every purchaser to your marketing list. www.mailerlite.comwww.mailerlite.com

Brevo is particularly interesting if your audience is getting large, because its free offering is based much more on sending volume than a tiny subscriber cap, and it supports Shopify/WooCommerce integrations. www.brevo.com

If you tell me what store you use (Shopify, WooCommerce, Fourthwall, Etsy, Stan, etc.) and roughly how many subscribers you have, I can tell you which one I'd use and exactly what automations I'd set up.

For a creator selling merch, MailerLite is probably the best free starting point—especially if your store is on Shopify, WooCommerce, Wix, Squarespace, or BigCommerce.

My picks

Why I'd choose MailerLite: its free plan includes visual automations and 2,500 emails/month, and its ecommerce integrations can pass purchase/order information into your account. www.mailerlite.com

That lets you build something like:

Customer buys merch → wait 3 days → “Hope you're loving your hoodie!” → wait 10 days → ask for a photo/review → wait 30 days → recommend another product.

It can also trigger automations based on things like a purchase, a specific product, purchase frequency, abandoned cart, or abandoned checkout. www.mailerlite.com

MailerLite

Brevo is my runner-up if you want transactional emails (order confirmations, shipping updates, etc.) alongside marketing. Its free tier includes 300 emails/day and automation for up to 2,000 contacts, and its WooCommerce integration supports purchase and abandoned-cart follow-ups. help.brevo.com

Brevo

One important catch: ecommerce-triggered marketing emails generally require the customer to have opted into marketing/newsletters; don't assume you can automatically add every purchaser to promotional sequences. www.mailerlite.com

If you tell me what merch platform you use (Shopify, Fourthwall, Etsy, WooCommerce, Printful, etc.), I can tell you which free option will work best with that exact setup.

For a creator selling merch, MailerLite is probably the best free starting point.

• MailerLite — Free up to 250 subscribers and 2,500 emails/month, with automation included. It has native integrations with Shopify, WooCommerce, Wix, Squarespace, BigCommerce, and others, and can trigger workflows from purchases, specific products, abandoned carts, etc. www.mailerlite.com
• Brevo — Another strong free option. Its free plan allows 100,000 contacts and 300 email sends/day, and its WooCommerce integration supports order syncing, abandoned carts, and post-purchase follow-ups. help.brevo.com

What I'd choose for you

MailerLite if you're a solo creator and want something simple. You could build a sequence like:

Purchase → 3 days later: "How are you liking it?" → 14 days: styling/use tips → 30 days: new merch/repeat-purchase offer

One important distinction: marketing follow-ups require the customer to have opted into marketing emails. Transactional emails such as order confirmations are a separate category. www.mailerlite.comwww.mailerlite.com

MailerLite

If you tell me whether your store is Shopify, WooCommerce, Etsy, Fourthwall, Gumroad, or something else, I can tell you the best free setup specifically for that store.

Yes. For a creator who sells merch, I’d shortlist these free email platforms:

What I'd pick for you

MailerLite if your priority is creator + merch + newsletters. It's more creator-friendly than a pure ecommerce platform, while still giving you ecommerce triggers and integrations. Its free tier currently includes 12,000 emails/month, which is substantially more sending capacity than Omnisend's free tier. www.mailerlite.com

For example, you could build:

Purchase → thank-you email → shipping follow-up → “how are you liking it?” → related merch recommendation → VIP/early-access email.

If your merch business is the bigger priority and you want sophisticated abandoned-cart, post-purchase, and customer-behavior automations, I'd lean Omnisend instead. support.omnisend.comsupport.omnisend.com

If you tell me which store you use (Shopify, Etsy, WooCommerce, Fourthwall, Spring, etc.) and roughly how many subscribers you have, I can tell you which free option fits best.

Yes. If you’re a creator selling merch, I’d shortlist Brevo and Sender first.

My pick: Brevo

For what you're describing, Brevo is probably the sweet spot. Its free plan includes marketing automation for up to 2,000 contacts, and its ecommerce integrations can sync orders and customer data. You can build flows such as:

Purchase → thank-you email → 7 days later → "How are you liking your merch?" → 30 days later → new-drop/related-product email

For WooCommerce specifically, Brevo supports purchase-triggered automations, abandoned carts, product recommendations and post-purchase follow-ups. help.brevo.com

The catch: the free plan is limited to 300 email sends/day and includes Brevo branding. help.brevo.com

Sender is worth a serious look

If you're still relatively small, Sender may actually be the most generous free option: up to 2,500 subscribers and 15,000 emails/month, with automation included. It specifically supports Shopify and WooCommerce and offers post-purchase, abandoned-cart, order-confirmation, win-back and upsell flows. www.sender.net

One important distinction

If by "order follow-ups" you mean transactional emails like "Your order shipped" or "Your order has been delivered," that's different from marketing emails like "Hope you're loving your hoodie—here's 15% off your next one." Brevo can handle both, while Sender is particularly attractive for the marketing automation side.

If you tell me which store you're using (Shopify, WooCommerce, Etsy, Fourthwall, etc.) and roughly how many customers you have, I can tell you which free option I'd choose and exactly what automations I'd set up.

For a creator selling merch, you’ll want a free email platform that can do more than newsletters — specifically:

• Order-triggered emails (purchase confirmation, thank-you, review request)
• Post-purchase follow-ups (“how are you liking your hoodie?”)
• Abandoned cart reminders
• Customer segmentation (buyers vs. fans who haven’t purchased)
• Integrations with Shopify, WooCommerce, Etsy, etc.

Here are the strongest free options:

My picks for a creator:

1. Starting out (under a few thousand fans): Brevo
   • Good balance of free + useful automation.
   • You can set up flows like:
     • New subscriber → welcome series
     • Customer purchase → thank-you email
     • 30 days after purchase → review/next drop email

2. Merch is becoming a serious business: Klaviyo
   • More built around ecommerce behavior (what someone bought, browsed, abandoned, etc.). help.klaviyo.com

3. You mainly want to grow a creator community: MailerLite
   • Strong for newsletters, launches, and audience-building.

If you tell me what you sell through (Shopify, Etsy, Fourthwall, WooCommerce, Printful, etc.) and roughly how many subscribers you have, I can narrow it down.