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MailerLite – Signup forms (official)

By MailerLite

Forms & Data Collection / Contact Forms

Reviewed by Omar Dabbas

Trusted WordPress expert with 20+ years of experience evaluating plugins for the WP ecosystem.

MailerLite – Signup forms (official) Review - In-Depth Analysis

Easily add newsletter signup forms to your WordPress site. Subscribers are saved directly to your MailerLite account. Quick setup with pre-built forms or custom options.

Performance Overview

WPS Score

6.62/10

User Rating

3/5 (based on 40+ reviews)

Active Installations

100,000+

Update Frequency

Very Good It is calculated using the weighted average of same category plugins.

Security Score

5.49 / 10 (Medium Risk) It is calculated using the weighted average of all versions.

What It Does

The Official MailerLite signup forms plugin makes it easy to grow your newsletter subscriber list from your WordPress blog or website. The plugin automatically integrates your WordPress form with your MailerLite email marketing account.

If you don't have a MailerLite account yet, you can signup for a free trial here. Once you activate the plugin, you’ll be able to select and add any of the pre-built webforms from your MailerLite account or create a new form from scratch. You can place the form in the sidebar using a widget or use a shortcode to put it wherever you want.

Setup is fast and easy! You just need to enter your MailerLite account API code and you’re all set. Plugin features include easily-to-add webforms from MailerLite to your WordPress blog or website, option to create new webforms, WordPress 5 new editor support, save subscribers automatically to your MailerLite account, place webforms using widget or shortcode, double opt-in signup, updated plugin layout, and automate welcome emails from your MailerLite account.

Comparing to Alternatives

MailerLite – Signup forms (official) competes with several popular WordPress form plugins that offer broader form-building capabilities and integrations.

Top alternatives

Strengths

Official integration with MailerLite email marketing platform.
Allows embedding of signup forms created on MailerLite website.
Supports popup forms that can be shown automatically on WordPress sites.
Free to use without a paid upgrade requirement.
Simplifies newsletter subscription management for MailerLite users.

Weaknesses

Frequent issues with saving and editing forms within the plugin.
Unreliable syncing of subscribers to MailerLite lists.
Limited support for block-based checkout and newer WordPress features.
Known security vulnerabilities in past versions, though fixed in updates.

User Sentiment Analysis

User reviews show a mixed experience with a 3/5 average rating, but nearly half of the ratings are 1 or 2 stars, indicating significant dissatisfaction among many users.

Positive highlights

"The API connection works, and you can use a form created on MailerLite.com through the plugin." – Lukas Cech
"Plugin simplifies embedding MailerLite signup forms without coding." – honeystonebooks
"Popup forms are shown automatically on WordPress site, which is convenient." – familyaffiliatehub
"Integration with MailerLite platform is straightforward for basic use." – surfbee

Common complaints

Saving new forms does not work; custom texts are lost on reload.
Forms created in plugin sometimes redirect to MailerLite website with 'Form not found' error.
Subscription success messages shown but contacts are not added to lists.
Plugin does not support block-based checkout properly.
Plugin reports no embed forms exist despite them being created.

Weaknesses

Unreliable form management and syncing with MailerLite lists.
Confusing interface and lack of meaningful error feedback.
Issues with plugin compatibility on newer WordPress features.
Past security vulnerabilities raise concerns despite fixes.

Who Should Use This?

Best for

Users who rely heavily on the MailerLite email marketing platform and want a free, official plugin to embed signup forms with minimal coding knowledge.

Not ideal for

Users seeking a robust, reliable form builder with advanced features or those needing seamless integration with newer WordPress features and block-based checkout should consider alternatives.

Pricing & Value

Free version includes

The free version allows embedding MailerLite signup forms and popup forms without cost, suitable for basic newsletter subscription needs.

Final Verdict

MailerLite – Signup forms (official) offers an official and free solution for embedding MailerLite signup forms on WordPress sites, making it a convenient choice for users already invested in the MailerLite ecosystem. However, the plugin suffers from reliability issues, including problems saving forms, syncing subscribers, and limited support for newer WordPress features, which have led to mixed user reviews and a moderate rating.

Given the history of security vulnerabilities and the availability of more stable and feature-rich alternatives, users should carefully consider their needs. Those requiring dependable form functionality and broader compatibility may find better value in other established form plugins.

Other Notable Features

Here are a few other notable features of this free MailerLite – Signup forms (official) plugin.

newsletter signup

MailerLite integration

webform

Screenshots

FAQ

Requires PHP5 and CURL.

Use the load_mailerlite_form($id) function.

<?php if( function_exists( 'load_mailerlite_form' ) ) {     load_mailerlite_form(0); }

You can use CSS rules to style the sign-up form, use the following CSS selectors to target the various form elements.

Every form can be different, because element ID of form is:

#mailerlite-form_(your_form_id)

Elements of form can be styled.

.mailerlite-form .mailerlite-form-title {} /* the form title */ .mailerlite-form .mailerlite-form-description {} /* the form description */ .mailerlite-form .mailerlite-form-field label {} /* the form input label */ .mailerlite-form .mailerlite-form-field input {} /* the form inputs */ .mailerlite-form .mailerlite-form-loader {} /* the form loading text */ .mailerlite-form .mailerlite-subscribe-button-container {} /* the form button container */ .mailerlite-form .mailerlite-subscribe-button-container .mailerlite-subscribe-submit {} /* the form submit button */ .mailerlite-form .mailerlite-form-response {} /* the form response message */

Add your custom CSS rules to the end of your theme stylesheet, /wp-content/themes/your-theme-name/style.css. Do not add them to the plugin stylesheet as they will be automatically overwritten on the next plugin update.