How to Create a Signup Form in MailerLite

Affiliate disclosure: ToolTester24 may earn a commission if you buy through the affiliate links in this guide, at no extra cost to you. Our guide relies on public vendor documentation rather than hands-on account testing.

Learning how to create a signup form in MailerLite starts with picking a target subscriber group. Next, choose an embedded or pop-up form in the Forms menu and add your fields. Set up your consent box and double opt-in email, install the code snippet, and test with your own email address.

MailerLite signup form setup at a glance.

This tutorial relies on official MailerLite help docs rather than a live deliverability test. Before you open the form editor, decide where new contacts will go and what they will receive. Clear group names keep your welcome emails organized from day one.

Setup stage.	What you set up in MailerLite.	Why this check matters.
Subscriber group.	Pick or create a named group before building the form.	Links your form to the right welcome sequence and newsletter topic.
Form format.	Choose an embedded form for page layouts or a pop-up for timed prompts.	Matches the reader experience on blog posts, sidebars, or landing pages.
Fields and consent.	Add email, name, or custom fields plus a clear marketing consent checkbox.	Records what the subscriber agreed to receive at signup.
Double opt-in.	Edit the opt-in email and opt-in thank-you page.	Verifies that the person owns the email address before sends start.
Site installation.	Paste the universal JavaScript snippet and form code into WordPress.	Displays the form cleanly and sends new contacts to your account.
Pre-launch test.	Sign up with a fresh test address you control before turning on workflows.	Catches broken links, missing groups, or duplicate welcome emails early.

Try MailerLite free. Review the current subscriber and monthly email caps on the vendor page before you launch your form.

How do you choose a subscriber group and form type?

Each form in MailerLite feeds into one or more subscriber groups. A group is a simple label that tells you how a contact joined or what topic they picked. Create a clear group name like “Weekly SEO Tips” or “Pricing Guide Download” inside the Subscribers menu first.

Once your group exists, review the MailerLite signup forms overview to pick your layout. MailerLite offers embedded forms, pop-up forms, and promotion pop-ups. Most small business sites start with an embedded form placed inside an article, footer, or contact page.

Embedded forms stay visible on the page without interrupting the reader. Pop-up forms appear based on scroll depth, time on page, or exit intent. If you use a pop-up, set a polite delay so mobile readers can read your content first.

How to create a signup form in MailerLite step by step.

Follow the listed path in the MailerLite embedded form help guide to build your first form. Keep your first version simple so you can test the full signup path in minutes.

1. Open your MailerLite dashboard and click Forms in the main navigation menu.
2. Select the Embedded forms tab or the Pop-ups tab, then click Create form.
3. Enter a clear internal form name that tells your team where this form will live.
4. Select the form type, click Save and continue, and pick at least one target subscriber group.
5. Click Continue to open the drag-and-drop editor and edit your heading, short promise, and button text.
6. Add or remove input fields so you only ask for details you use in your emails.
7. Open the Settings panel in the editor to enable consent checkboxes, interest groups, or reCAPTCHA.
8. Switch to the opt-in tabs to edit the double opt-in email subject, message body, and thank-you page.
9. Click Done editing to save your changes and generate the HTML and JavaScript embed snippets.

How do custom fields, GDPR checkboxes, and double opt-in work?

Keep custom fields short and useful.

An email field alone often converts better than a long questionnaire. Add a first name field only if you merge names into your newsletter greetings. If you need role or company size, map that input to a custom field in the field settings panel.

Add a clear consent checkbox.

In the form settings sidebar, enable the marketing permissions or GDPR checkbox option. Write plain consent text that explains what you send and how often you send it. Link your privacy policy in the form note so visitors can check how you store their data.

Keep double opt-in active for list health.

Double opt-in is enabled by default on new MailerLite forms. When someone submits the form, MailerLite sends an opt-in email with a verification link. The contact joins your active group only after clicking that link, which blocks typos and fake bots.

Edit both the opt-in email and the opt-in thank-you page before posting. Use your real brand name in the subject line so the reader recognizes your message right away. On the thank-you page, tell the subscriber when their promised download or welcome email will arrive.

How do you install the snippet on WordPress and test signups?

After you save the form, MailerLite shows your overview screen with installation code. Embedded forms provide a universal JavaScript snippet for your site header and a short spot snippet for the exact page block. You can also use the official MailerLite WordPress plugin or paste the raw HTML code into a Custom HTML block.

Before you connect a live welcome automation, run a controlled test with consenting test contacts. Use two fresh email addresses that you own and that are not already in your subscriber list. Existing subscribers often skip opt-in steps, which can hide broken double opt-in settings.

Submit the live form on your WordPress page, open the opt-in email, and click the verification link. Then open your MailerLite dashboard and check that the test contact appears in the right subscriber group with active status. Once that check passes, you can safely connect your welcome workflow to that group.

What are the trade-offs and plan limits to check?

Check the MailerLite pricing page for current plan rules before scaling your traffic. Published Free plan terms have listed limits such as 500 subscribers and 12,000 monthly emails, while some regional or updated account tables list tighter caps. Always check the exact subscriber and monthly send numbers shown inside your own signup dashboard.

Factor to review.	What to check in your account.
Free plan subscriber cap.	Check whether your account cap is 500 subscribers or a lower regional limit, because sending pauses above the cap.
Monthly email allowance.	Confirm your monthly send limit, such as 12,000 monthly emails, and count both welcome emails and newsletters.
Double opt-in friction.	Some visitors forget to click the opt-in link, so tell them on the thank-you screen to check their inbox.
JavaScript script loading.	Caching or script-delay plugins in WordPress can delay pop-ups or form rendering if you minify the MailerLite script.

Often asked questions.

Can one MailerLite signup form add subscribers to multiple groups?

Yes. You can assign a form to a single default group or enable interest group checkboxes so readers pick their own topics during signup.

Should I turn off double opt-in on my embedded form?

Keep double opt-in turned on for public web forms. It prevents spam traps and mistyped addresses from filling up your subscriber limit.

Do I need a plugin to add a MailerLite form to WordPress?

No. You can paste the JavaScript or HTML embed code directly into a WordPress Custom HTML block without installing an extra plugin.

Why did my test email address not receive the welcome email?

If your address was already in the target group from an earlier test, the group-join trigger will not fire again. Delete the test contact completely or use a fresh email address.

Our verdict on MailerLite signup forms.

MailerLite gives small businesses a clean way to collect subscribers, record consent, and sort readers into clear groups. Build one embedded form first, keep the field list short, and check each step with a fresh test address before turning on your welcome sequence.

Continue with the matching review or setup guide.

• MailerLite Review: Newsletter Features, Free Plan and Upgrade Limits.
• Email Marketing Software for Small Businesses: AWeber, MailerLite or GetResponse?
• GetResponse vs MailerLite: Choose Your First Email Setup.
• Free Email Marketing Plans: MailerLite, AWeber and GetResponse Compared.

Check MailerLite plans. Compare the Free, Growing Business, and Advanced tiers against your expected subscriber growth before you upgrade.

Official vendor sources reviewed for this tutorial: MailerLite signup forms overview, MailerLite embedded form help guide, and MailerLite pricing. This guide relies on public vendor help docs and reports no live deliverability test or guaranteed conversion rate.