Practical guide

MailerLite WordPress plugin: forms, pop-ups and page speed

MailerLite's official WordPress plugin is the simplest route from a WordPress site to a MailerLite group.

Last reviewed October 6, 2026

Quick answerMailerLite's official WordPress plugin connects with an API token, shows your pop-ups automatically, and places embedded or custom forms that send signups to a group you choose.

How MailerLite and WordPress work together

MailerLite builds the official MailerLite signup forms plugin, which places MailerLite signup forms on a WordPress site. Pop-ups and promotion pop-ups you switch on in MailerLite appear on the site automatically through the plugin's script, while embedded forms go into a page or post through the MailerLite toolbar icon, or into a sidebar as a widget.

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What you need first

You need a MailerLite account, an API token generated on its Integrations page, and admin access to the WordPress dashboard. On WordPress.com, its own guide says a free site must upgrade before it can install plugins.

Set up the connection

  1. In MailerLite, open Integrations, choose MailerLite API and generate a new token.
  2. In WordPress, add the Official MailerLite signup forms plugin from Plugins and activate it.
  3. Open MailerLite, then Settings, in the WordPress sidebar and paste the token.
  4. Under Signup forms, add a form made in MailerLite, or a custom form and the group its signups join.
  5. Place the form with the MailerLite icon in a page or post, or drag the widget into a sidebar.

Test the form

Sign up with an address you control and check that it lands in the right group with the right status. With double opt-in on, the subscriber stays Unconfirmed until they click the confirmation email, and automations do not start for Unconfirmed subscribers.

For custom forms made in WordPress, double opt-in is switched on for all of them at once in the plugin's settings; forms made in MailerLite use their own setting.

When pop-ups do not appear

MailerLite's help says other WordPress plugins can block the pop-up script; then pop-ups will not appear on their own and the script has to be added by hand. A form must also be switched on with its Status toggle in MailerLite before it shows.

Plans and limits

MailerLite's own limits apply to the forms you place: 3 active forms on Free, 10 on Comfort and unlimited on Power, and pop-ups are on every plan. If the site runs a store, MailerLite's separate plugin is covered in the WooCommerce guide.

The WordPress plugin can be connected to a new MailerLite account during its 14-day premium trial.

Continue when useful

Next: MailerLite ecommerce integrations

If the same site sells products, this guide covers how the Shopify integration connects a store to MailerLite.

Open MailerLite ecommerce integrations →

Sources used for this page

These records support the facts and comparisons above. Merchant-controlled records are labeled so you can separate product claims from independent evidence.

  1. MailerLite product overview — Merchant documentation · mailerlite.com · Merchant-controlled · read October 6, 2026
  2. MailerLite current plans and pricing — Merchant documentation · mailerlite.com · Merchant-controlled · read October 6, 2026
  3. MailerLite automation help library — Merchant documentation · mailerlite.com · Merchant-controlled · read August 23, 2026
  4. MailerLite integration directory — Merchant documentation · mailerlite.com · Merchant-controlled · read August 23, 2026
  5. MailerLite groups and segments — Platform documentation · mailerlite.com · Merchant-controlled · read August 24, 2026
  6. Google email sender guidelines — Platform documentation · support.google.com · Merchant-controlled · read August 23, 2026
  7. MailerLite help: using MailerLite with WordPress — Merchant documentation · mailerlite.com · Merchant-controlled · read October 6, 2026
  8. MailerLite WordPress integration — Merchant documentation · mailerlite.com · Merchant-controlled · read October 6, 2026
  9. MailerLite help: connecting WooCommerce — Merchant documentation · mailerlite.com · Merchant-controlled · read October 6, 2026
  10. MailerLite signup form features — Merchant documentation · mailerlite.com · Merchant-controlled · read October 6, 2026
  11. Install a plugin (WordPress.com support) — Independent · wordpress.com · read October 6, 2026