Integration · Email

Connect Claude & ChatGPT to MailerLite Classic

Ask your AI whether someone is subscribed, which groups they are in, or to add a new signup to a group in MailerLite Classic. It can read subscribers, groups, segments, fields, campaigns, email activity and account statistics. It can also add and update subscribers, create and rename groups, and add or remove subscribers from groups.

Connect MailerLite Classic free

Free plan, no credit card. Takes about a minute.

Try asking

“Is [email protected] subscribed, and which groups is she in?”
The AI gets the subscriber with her status and fields, and lists her groups.
“Add [email protected] to the Workshop group.”
It adds him to the group and creates the subscriber if he does not exist yet.
“Which campaigns are still drafts?”
It lists the campaigns with status draft.

What your AI can do

Subscribers

Search, add and update subscribers, set custom fields, and read their groups and email activity.

Groups and segments

Create and rename groups, add or remove subscribers, and list groups, group members and segments.

Campaigns and stats

List sent, draft and outbox campaigns and read account-wide statistics.

“Did [email protected] open our last emails?”
It lists her email activity, such as opens and clicks.
“Unsubscribe [email protected].”
It sets the subscriber to unsubscribed, which stops all emails to him.
“How many subscribers do we have in total?”
It gets account statistics such as subscriber and campaign totals.

44 tools for MailerLite Classic

These tools are switched on when you connect. You can switch any of them off, or require your approval before it runs.

add_subscriber_to_groupChanges dataAdd a subscriber to a group (`group_id`) by `email`, with optional `name` and `fields`. Creates the subscriber if they do not exist yet.
attach_subscriberChanges dataAssign a subscriber (subscriber id). API summary: /groups/groupname/subscribers/:subscriberid/assign.
create_batchVisible to othersCreate a new batch. Required: requests. Has effects visible outside this system. API summary: /batch.
create_campaignChanges dataCreate a new campaign. Required: type, name, groups or segments. API summary: /campaigns.
create_double_optinChanges dataCreate a new double optin. API summary: /settings/doubleoptin.
create_fieldChanges dataCreate a new field. API summary: /fields.
create_groupChanges dataCreate a subscriber group with a `name`.
create_subscriberChanges dataAdd a subscriber with `email`, plus optional `name` and custom `fields`. To add them straight into a group, use add_subscriber_to_group instead.
create_subscriber_groupsby_group_namesubscribersChanges dataCreate a new subscriber. Search subscribers first to avoid duplicates. API summary: /groups/groupname/subscribers.
create_webhookDeletesCreate a new webhook. Required: url or event. Destructive action; may require approval. API summary: /webhooks.
delete_campaignDeletesPermanently delete a campaign by campaign id. Destructive action; may require approval. API summary: /campaigns/:id.
delete_fieldDeletesPermanently delete a field by field id. Destructive action; may require approval. API summary: /fields/:id.
delete_groupDeletesPermanently delete a group by group id. Destructive action; may require approval. API summary: /groups/:id.
delete_webhookDeletesPermanently delete a webhook by webhook id. Destructive action; may require approval. API summary: /webhooks/:id.
get_accountGet the connected MailerLite account's own details. Use to confirm which account you are working in.
get_account_statsGet account-wide statistics such as subscriber and campaign totals.
get_groupGet one group by `group_id`.
get_group_subscriberGet one subscriber for a group by subscriber id. API summary: /groups/:id/subscribers/(:subscriberid).
get_group_subscriber_subscribers_in_a_group_by_typeGet one subscriber for a group by type. Results are paginated. API summary: /groups/:id/subscribers/:type.
get_importGet one import by import id. API summary: /groups/:id/subscribers/import/:importid.
get_subscriberGet one subscriber by ID or email (`subscriber_identifier`), with their fields and status.
get_subscriber_taskGet one task for a subscriber by type. API summary: /subscribers/(:id or :email)/activity/:type.
get_timezoneGet one timezone by timezone id.
get_webhookGet one webhook by webhook id. API summary: /webhooks/:id.
list_campaignsList campaigns by `status`: sent, draft or outbox. Paginate with `limit` and `offset`.
list_double_optinsList double optins. API summary: /settings/doubleoptin.
list_fieldsList the subscriber fields (standard and custom) and their keys, for use in `fields` when creating or updating subscribers.
list_group_subscribersList the subscribers in a group (`group_id`), optionally by `type`. Paginate with `limit` and `offset`.
list_groupsList subscriber groups, with subscriber counts. Paginate with `limit` and `offset`.
list_segmentsList subscriber segments.
list_subscriber_activityList a subscriber's email activity (such as opens and clicks) by `subscriber_identifier` (ID or email).
list_subscriber_groupsList the groups a subscriber (`subscriber_identifier`) belongs to.
list_subscribersList subscribers, optionally filtered by `type` (active, unsubscribed, bounced, junk, unconfirmed). Paginate with `limit` and `offset`.
list_webhooksList webhooks. API summary: /webhooks.
remove_subscriber_from_groupDeletesRemove a subscriber (ID or email in `subscriber_identifier`) from a group (`group_id`). The subscriber stays in the account.
search_groups_searchChanges dataSearch groups. Use this to find existing groups before creating a new group. API summary: /groups/search.
search_subscribersSearch subscribers by email or name with `query`. Use this to find a subscriber before other lookups.
update_campaign_actionChanges dataUpdate an existing action identified by action. API summary: /campaigns/:id/actions/:action.
update_campaign_contentsVisible to othersUpdate an existing content identified by campaign id. Has effects visible outside this system. API summary: /campaigns/:id/content.
update_fieldChanges dataUpdate an existing field identified by field id. API summary: /fields/:id.
update_groupChanges dataRename a group (`group_id`, `name`).
update_subscriberChanges dataUpdate a subscriber by ID or email (`subscriber_identifier`): name, custom `fields`, or `type` (active or unsubscribed; unsubscribed stops all emails to them).
update_webhookDeletesUpdate an existing webhook identified by webhook id. Destructive action; may require approval. API summary: /webhooks/:id.
upload_subscriberChanges dataImport a subscriber (group id). API summary: /groups/:id/subscribers/import.

Set up in three steps

1
Pick the app
Create a free HeyMyApps account and choose MailerLite Classic from the app list.
2
Paste your key
Paste your MailerLite Classic API key. Log in to MailerLite Classic, open the Integrations page and choose Developer API to see your API key. Copy it into HeyMyApps.
3
Add the link to your AI
You get a personal MCP link. Add it to Claude, ChatGPT or Cursor:
1. Click your name, then Settings › Connectors › Add custom connector.
2. Paste your link as the Remote MCP server URL.
3. Switch it on from the + menu in a chat.

Questions

What can the AI do in MailerLite Classic?

It can read subscribers, groups, group members, segments, fields, campaigns, email activity and account statistics. It can add and update subscribers, create and rename groups, and add subscribers to or remove them from groups. It cannot send or schedule campaigns.

Does the AI see my MailerLite Classic credentials?

No. Your MailerLite Classic credentials are encrypted at rest and never shown to the AI. After you save them, they are not shown again, not even to you. The AI only sees the results of the tools it calls.

Can I control what the AI is allowed to do?

Yes. You choose which tools are switched on, so you can start read-only. Removing a subscriber from a group can require your approval before it runs, and so can updating a subscriber, since that tool can unsubscribe someone. Every tool call is logged.

Does it work with ChatGPT?

Yes. In ChatGPT go to Settings › Apps & Connectors › Advanced and turn on Developer mode, then add your HeyMyApps link. Developer mode needs a paid ChatGPT plan: Plus, Pro, Business or Enterprise. The same link also works in Claude (Settings › Connectors › Add custom connector), Cursor and other MCP clients.

What does it cost?

HeyMyApps has a free plan with no credit card required. Paid plans bill per completed task. You also need your own MailerLite Classic account.

Which MailerLite accounts does this work with?

This connection is built for MailerLite Classic. It uses the API key you find in MailerLite Classic on the Integrations page, under Developer API.