Email marketing

MailerLite in Core Forms

Add or update MailerLite subscribers with name and group membership.

Bundled with Core Forms, the WordPress forms plugin with every premium feature in the box. No add-on tax.

Bundled, no add-on tax Unlimited sites Use code CFLAUNCH for 20% off either plan. Ends September 30, 2026 (IST).

Core Forms sends the selected email and name fields to MailerLite and can assign a group. Subscription confirmation rules are managed in MailerLite; this action does not provide a per-form double-opt-in toggle.

What you get

How MailerLite works in Core Forms

Subscriber upsert

Create or update a subscriber by email.

Optional group

Use a group ID or leave it empty to add without a group.

Email and name

Map those two fields from the form; arbitrary custom fields are not included.

Set it up

Connect MailerLite in 3 minutes

1

Get an API key

Create a key in MailerLite’s developer API settings.
2

Configure the action

Enter the key and optional group ID.
3

Select fields

Choose the email and name fields.

Want the long version? Read the step-by-step guide with screenshots of every setting.

Inside Core Forms

The action in WP-Admin

The Add to MailerLite action with an API key, a group ID and the email and name fields selected — One group per action. Add a second action with conditions to split subscribers by an answer.

Pairs well with

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Mailchimp

Subscribe form users to any Mailchimp audience with field mapping and double opt-in.

Brevo

Create or update Brevo contacts with email, name, and list membership.

ConvertKit

Subscribe contacts to a Kit form and assign tags.

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Bundled with every Core Forms license.

MailerLite and every Core Forms-built integration on this site are included with your license. Use code CFLAUNCH for 20% off either plan. Ends September 30, 2026 (IST).

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