MailerLite Webflow Integration

Overflow builds your website in Webflow and delivers a Webflow MailerLite integration that sends every signup to the right group, confirmed and documented. Book a call. Official Webflow Certified Partner.

You embedded the MailerLite form and it doesn't match your design. Or you pointed a Webflow form at MailerLite, people sign up, and nobody arrives in the group. Or someone duplicated the form and the field names changed. The welcome automation never fires. If that sounds familiar, you're in good company: it's what the Webflow forum threads that rank for this search are full of.

Here's the direct answer. There is no official Webflow MailerLite integration app: MailerLite has no Webflow Marketplace app, and Webflow's own MailerLite guide says so. Every setup is one of four routes: MailerLite's embedded forms and pop-up script, an automation platform (Zapier, Make, n8n), or the Webflow and MailerLite APIs. Most setups combine two.

You shouldn't have to choose between your Webflow design and MailerLite's groups and opt-in. The connection needs engineering, not a pasted snippet. That's what we build.

• Grow your list from every page without waiting for a developer.
• Send every signup to the right MailerLite group, with the right fields and opt-in.
• Own a setup your marketing team can change after handover.

The old way: paste the embed, follow a 2023 forum tutorial, hope the automation fires. Find out weeks later that half the signups never arrived.

The Overflow way: each form gets a mapped group, opt-in rules and a fallback record. All of it documented.

Why Webflow and MailerLite need a deliberate connection

Webflow handles design, CMS and hosting, but email marketing isn't built in. MailerLite fills that gap with groups, custom fields, automations and pop-ups, as Webflow's MailerLite guide puts it.

The tension most tutorials skip: MailerLite's embedded forms render with MailerLite's styling, not your design system. Native Webflow forms keep your design, but they need a mapping layer to reach MailerLite. So this is a build decision, not an app install.

Who this is for

B2B marketing leads and founders who run newsletters, gated content or nurture in MailerLite and want their site in Webflow. Or who already have a Webflow site where signups are unreliable. Typical uses on a marketing site:

• Newsletter signup with a welcome sequence
• Whitepaper and lead magnet delivery
• Webinar and event registration with reminders
• Waitlists for a new service or market

The trigger is usually a rebrand, a new service line or market, a migration off WordPress, or a list that stopped growing after the last redesign.

Where it needs a plan, and where we're not the fit

We build B2B marketing websites, not stores. Webflow Ecommerce order flows into MailerLite, like post-purchase groups, are outside what we build. If that's your main use, we're not the right fit.

If sales needs lead routing, deal stages and handoff, that belongs in a CRM. For those teams we connect Webflow to HubSpot, Pipedrive or Salesforce. MailerLite can sit alongside one: marketing runs the newsletter, sales works the pipeline.

Is there an official MailerLite app for Webflow?

No. Webflow's guide states that MailerLite currently has no Webflow app, and that every method uses embedded code, a third-party automation platform or a direct API connection.

MailerLite's own Webflow page lists what's possible: create or update subscribers from Webflow form submissions, and add submissions to a MailerLite group. It then routes you through third-party integration platforms to do it.

So the real question isn't "which app?". It's which method fits your forms, your opt-in needs and the person who maintains it after launch.

The four ways to build a Webflow MailerLite integration

Here's what each method does, where it fits and where it stops. The comparison below puts them side by side.

MailerLite embedded forms and the pop-up script

You build the form in MailerLite (Forms > Embedded forms), then paste the code into a Code Embed element in Webflow. MailerLite handles double opt-in, group assignment and GDPR consent checkboxes inside the form itself.

For pop-ups, MailerLite's universal snippet goes in your site's head code. Pop-ups then show site-wide with exit-intent, scroll or time-delay triggers. Webflow's guide lists promotion pop-ups with countdown timers under MailerLite's Advanced plan, which MailerLite renamed Power in 2026. Check which plan includes them on MailerLite's pricing page before you build one.

Best for: teams that want marketing to edit forms in MailerLite without republishing Webflow.

Limits: custom code only runs on published pages with a paid Webflow site plan. Forms carry MailerLite's styling. Cookie-blocking browser extensions can interfere with the pop-up display logic.

A native Webflow form posting straight to MailerLite

This is the workaround in most ranking tutorials. You set the Webflow form action to MailerLite's webform submit URL with method POST, rename the email field to fields[email] and add a hidden ml-submit field. Alberto Sadde's tutorial is a good example, and he found the endpoint by watching requests in Chrome's dev tools.

The trade-offs: it relies on MailerLite's form endpoint, not its documented API. Per Webflow's Help Center, a custom action means submissions aren't sent to or stored in Webflow. Webflow's own success message also stops working unless you add a script, such as Finsweet's Form Submit attribute.

Best for: one simple newsletter form where design matters.

Limits: brittle, no backup copy in Webflow, and field names break when forms are duplicated.

Zapier, Make or n8n

Zapier connects the Webflow New Form Submission trigger to MailerLite's Create Subscriber or Add Subscriber to Group action. You map fields, including custom fields like company, and Zapier can update existing subscribers instead of creating duplicates. See our Webflow Zapier integration page for how we set it up.

Make is where many people get stuck. Its MailerLite connector is labelled "MailerLite Classic", while newer MailerLite accounts use the newer API. The Make Community and Webflow forum threads in this search show it. The usual fix is Make's HTTP module calling the MailerLite API directly. Webhooks from Webflow's site settings remove the polling delay.

n8n has MailerLite and Webflow nodes, plus the HTTP Request node for actions the MailerLite node doesn't cover, such as adding a subscriber to an existing group.

One more check: Webflow's guide tells you to audit any scenarios still running on Webflow v1 connections, which were retired after 31 March 2025.

Best for: keeping native Webflow form design without custom code, or sending one signup to several tools.

Limits: another subscription, and one more system someone has to watch.

The Webflow and MailerLite APIs

A Webflow form_submission webhook sends each submission to a small server function. That function creates or updates the subscriber through the MailerLite API, with fields and group IDs.

The details that make it reliable:

• MailerLite's create-or-update call is non-destructive. Leaving out fields or groups doesn't remove them, per the MailerLite developer docs, so a second signup adds a group without wiping the others.
• Subscribers who unsubscribed, bounced or were marked as junk can't be reactivated through the API. Only a form, landing page or the app can do that.
• The API has a global rate limit of 120 requests per minute.
• MailerLite webhooks must respond within 3 seconds, and failed deliveries are retried three times.

Never put the MailerLite API key in client-side custom code. Page source is visible to anyone who inspects it.

MailerLite's terms add one more rule: if you collect subscribers yourself instead of through MailerLite forms, you're responsible for abuse prevention. That's why we add spam protection to every native form.

Best for: conditional group routing by form answer, multiple forms and markets, or writing data back to the Webflow CMS.

Limits: code to host and maintain.

Which method fits your setup?

Here's how the four methods compare on what matters after launch: does it keep your design, does Webflow keep a copy, how does double opt-in work, what extra subscription does it add, and who maintains it.

• Embedded form + pop-up script: MailerLite's styling, not yours. No copy in Webflow. Double opt-in handled by MailerLite. No extra subscription. Marketing maintains forms in MailerLite.
• Native form with custom action: keeps your Webflow design. No copy in Webflow. Opt-in follows the MailerLite form behind the endpoint. No extra subscription. Needs someone who knows the field naming rules.
• Zapier, Make or n8n: keeps your Webflow design. Webflow keeps a copy. Double opt-in needs MailerLite's "Double opt-in for API and integrations" setting. Adds an automation subscription. Someone monitors the automations.
• API handler: keeps your Webflow design. Webflow keeps a copy. Double opt-in needs the same setting. Adds hosting for a small function. A developer maintains the code.

That setting lives under Account settings > Subscribe settings in MailerLite, per Webflow's guide. Without it, native forms add subscribers without a confirmation email.

What we typically see: most B2B marketing sites end up with the pop-up script plus native Webflow forms through a webhook or an automation platform. That's a pattern, not a rule. For your Webflow MailerLite integration, the data flow plan decides.

What you get when Overflow connects Webflow and MailerLite

Your designed forms, MailerLite's groups and automations, and nothing lost in between. Here's what that looks like in practice.

Map every form to a group and an automation

We write a data flow plan before we build. Each form (newsletter, whitepaper, webinar, contact) gets a MailerLite group and the automation it should trigger.

Where a form asks about interest or service line, we route by answer. Multi-service B2B firms don't end up with everyone in one list and one generic welcome email.

Match fields to MailerLite custom fields

Name, company, role and source page map to MailerLite custom fields. We lock field names in the component, because duplicating a form in Webflow can silently rename fields, a problem raised in the Webflow forum thread that ranks for this search.

Set up double opt-in and consent properly

Embedded forms handle double opt-in inside MailerLite. Native forms need the "Double opt-in for API and integrations" setting switched on. Automations then fire only after the subscriber confirms, so we plan the welcome timing around that.

Consent checkbox wording and placement are agreed with you. We don't give legal advice; check the wording with your own advisor.

Keep keys safe and plan for failures

API keys live server-side only. With native forms, Webflow keeps submissions in its own dashboard independently of MailerLite, so a MailerLite outage doesn't lose data. On API handlers we add retries with exponential backoff, as Webflow's guide recommends. Every native form gets spam protection, because MailerLite's terms make you responsible for abuse prevention when you collect subscribers yourself.

Reuse one signup component across CMS templates

We build the signup block once as a Webflow component and place it across blog, resource and landing page CMS templates. Marketing adds it to new pages without a developer. The source page or campaign passes as a field, so MailerLite shows which content grows the list.

Test on the live site and hand it over

We submit every form on the live site. Then we check the group, the fields, the opt-in email, the automation trigger, and the success and error states. Handover includes documentation, training and video walkthroughs, so marketing can change groups and forms on its own.

What usually breaks, and how we prevent it

• Wrong group ID: we pull IDs from MailerLite and verify each with a live test.
• Make scenario on MailerLite Classic while the account runs new MailerLite: we check the account version first and call the current API where the connector falls short.
• Field names renamed after duplicating a form: locked names in one component, documented.
• Custom code not running on a free Webflow plan: we confirm the site plan before launch.
• Pop-ups hidden by cookie blockers: key signup points use inline forms, not only pop-ups.
• A second signup wiping existing groups: we use the non-destructive create-or-update call, not PUT.
• Webhook timeouts: handlers reply fast and do the heavy work afterwards.

Moving to Webflow without losing your list or your rankings

The worry we hear most: what if signups stop the week we launch? Or rankings drop?

Here's what we protect during a Webflow migration:

• URLs, mapped with 301 redirects.
• Metadata, schema and internal links, carried over.
• Every existing signup point, rebuilt and mapped to the same MailerLite groups, so your automations keep firing.

MailerLite itself stays untouched. Your groups, automations and templates don't move. Only the website does.

Nedcargo moved from WordPress to Webflow in 4 weeks. Typical builds take six to eight weeks, and we agree the timeline after discovery, not before. We don't promise rankings; we protect what you've earned.

Planning a WordPress to Webflow migration? Compare the platforms in Webflow vs WordPress, or see our Webflow SEO services.

How we deliver your Webflow MailerLite integration

The same six steps as every Overflow Webflow project, with MailerLite built into each one.

1. Strategy and discovery. We audit your forms, MailerLite groups, automations and opt-in settings, and write the data flow plan.
2. Design system. The signup component and its states (default, error, success, already subscribed) designed in Figma.
3. Webflow development. CMS, components and the MailerLite connection, using the method chosen in strategy.
4. Content migration. Content, redirects and technical SEO, with AI Search built in.
5. Quality assurance. Live test submissions, group and opt-in checks, automation triggers and performance.
6. Handover to marketing. Documentation, training and support.

Cost and timing are agreed upfront. Communication is fast. Or, as one client put it: "they keep their promises."

Proof from B2B teams we've built for

We don't have a published MailerLite case study, so we won't show one. The results below come from other Webflow projects. They show how we build and migrate B2B websites, not what a MailerLite connection achieved, so read them that way.

• Boekhouden voor Beginners: 100 email sign-ups in the first two months, alongside 589% growth in estimated organic traffic.
• Nedcargo: migrated from WordPress to Webflow in 4 weeks, with 98+ Lighthouse performance.
• BlinkLab: 7 weeks from strategy to launch, after its $17.5M raise.
• Aumatics: 300%+ marketing ROI and 8+ new high-ticket clients.

What we can show you is the method: a data flow plan, mapped groups, live test submissions and documentation. Ask on a call and we'll walk you through it for your own forms.

"Communication was always smooth and fast, the quality of their work was excellent." Marketing Manager, Informer Group

"Communication is excellent, and they keep their promises, something we cannot always say about other online marketing agencies." Quinten van der Kraaij

Who does the work

Overflow is an official Certified Webflow Partner. Jort Steinebach is a Certified Webflow Developer who has built 40+ Webflow sites and leads development and CMS architecture. Niels Voshol covers strategy, SEO and AI Search, across 40+ B2B projects.

Yes, we're a small senior team. That's the point. The people you talk to are the people who do the work. More about our B2B Webflow agency.

What does a Webflow MailerLite integration cost?

We don't publish a price list, because no two setups are the same. We scope it properly and agree a fixed scope and price before we start.

What drives the scope:

• Forms and templates: how many forms, and how many CMS templates they live in.
• Method: an embed is lighter than automation-platform mapping, and both are lighter than an API handler.
• Context: a standalone connection on an existing Webflow site, or part of a full build or migration.
• Routing: one group per form, or conditional groups based on form answers.
• Languages and markets: forms across several locales with Webflow localization.

To show how far apart two setups can be:

• Lighter: an existing Webflow site, the MailerLite pop-up script plus one embedded newsletter form, one language.
• Heavier: part of a WordPress to Webflow migration, one signup component across several CMS templates, native forms through a webhook handler with conditional groups, a backup record and alerts, and several locales.

Third-party costs you own

• A paid Webflow site plan, needed for custom code and Code Embed to run on published pages. Check current plans on Webflow's pricing page.
• Your MailerLite plan. At the time of writing, the free plan covers up to 250 subscribers and 2,500 emails a month, Comfort starts at $12/month, and Power adds unlimited monthly emails. Paid plans scale with active subscribers. See MailerLite's pricing page.
• Optional: Zapier, Make or n8n fees, if that method is chosen.

Older guides quote different numbers. New pricing took effect in June 2026: Growing Business and Advanced became Comfort and Power, and the free plan dropped from 500 subscribers and 12,000 emails to 250 and 2,500 (per EmailOctopus and MailerLite's help pages). Plans change, so check MailerLite's pricing page before you budget.

Fixed scope, cost and timing agreed upfront. No funnies, no surprises.

Webflow MailerLite integration FAQ

Does MailerLite have an official Webflow app?

No. See Is there an official MailerLite app for Webflow? above: every method uses embedded code, an automation platform or the APIs.

Do I need Zapier or Make to connect Webflow and MailerLite?

No. Embedded forms and the pop-up script work through Code Embed and head code. Add an automation platform or API handler when you want native Webflow form design, conditional groups or several destinations.

Can I keep my own Webflow form design?

Yes, with native Webflow forms connected through a webhook, Zapier, Make or the API. Embedded MailerLite forms use MailerLite's styling.

Why are my Webflow signups not reaching MailerLite?

Usually one of the causes in What usually breaks: a wrong group ID, mismatched field names after duplicating a form, a Make scenario on the Classic connector, or double opt-in waiting for confirmation. We test every form live before launch.

Does double opt-in work with Webflow forms?

Yes. It's automatic with embedded forms. For native forms, switch on "Double opt-in for API and integrations" in MailerLite. Automations then start after the subscriber confirms.

Can I show MailerLite pop-ups on my Webflow site?

Yes. Paste MailerLite's universal snippet into your head code, on a paid Webflow site plan. Check which MailerLite plan includes promotion pop-ups with countdown timers.

What happens to submissions if MailerLite is down?

With native Webflow forms, Webflow keeps submissions in its own dashboard, so nothing is lost. API handlers should retry with backoff. With a custom form action, Webflow stores no copy.

Is the Webflow MailerLite sync two-way?

Not by default. Writing MailerLite subscriber data into the Webflow CMS needs MailerLite webhooks and the Webflow Data API, built server-side.

Should we use MailerLite or HubSpot for a B2B website?

It depends on who owns the follow-up. Newsletters and nurture fit MailerLite. Lead routing and deal stages need a CRM like HubSpot or Salesforce. Comparing email tools? See our ActiveCampaign, Mailchimp and Klaviyo integration pages.

Ready to grow your list with a Webflow MailerLite integration marketing owns?

Your Webflow design. MailerLite's groups, opt-in and automations. A setup your marketing team owns after handover, with every form mapped, tested and documented.

Tell us which forms you run and where your list lives today. We'll tell you which method fits and what it takes, with scope, cost and timing agreed upfront.

Using other tools too? See all our Webflow integrations.

Book a call. Official Webflow Certified Partner.