Integration · Email

Connect Claude & ChatGPT to BigMailer

Ask your AI to add a contact to a list, draft next month's newsletter, or send a transactional email in BigMailer. It works across your brands and can read and update contacts, lists, segments, fields, templates and senders, create and update bulk campaigns, send test emails and send transactional emails.

Connect BigMailer free

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

Try asking

“Which lists do we have in the Acme brand?”
The AI finds the brand and lists its contact lists.
“Add [email protected] to the Newsletter list.”
It adds the contact to the brand and the list, or updates the contact if the email already exists.
“Draft the October newsletter for the Customers list, but do not send it.”
It creates the campaign with subject, sender, content and list, and leaves it not ready, so nothing is sent.

What your AI can do

Contacts and lists

Add, update and delete contacts, create lists, and read segments, custom fields and suppression lists.

Campaigns

Create and update bulk campaigns, read templates and senders, and send test emails before anything goes out.

Transactional email

List and read transactional campaigns and send one to a single address with merge variables.

“Send a test of that campaign to me.”
It sends a test email of the campaign's content to the addresses you give it.
“Send the welcome email to [email protected].”
It sends the transactional campaign to that address right away, with any merge variables you pass.
“Which senders are verified in this brand?”
It lists the verified sender emails and domains for the brand.

24 tools for BigMailer

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

create_campaignVisible to othersCreate a bulk campaign in a brand: `name`, subject, from, HTML or template, and `list_ids` or `segment_id`. It is only sent when `ready` is true (immediately, or at `scheduled_for`), which emails every recipient.
create_listChanges dataCreate a contact list in a brand (`brand_id`) with a `name`.
delete_contactDeletesPermanently delete a contact (`contact_id`) from a brand (`brand_id`). This cannot be undone.
get_brandGet one brand by `brand_id`, with its default sender name and email.
get_campaignGet one bulk campaign by `brand_id` and `campaign_id`, with its content and status.
get_contactGet one contact by `brand_id` and `contact_id`, with field values, lists and unsubscribes.
get_listGet one contact list by `brand_id` and `list_id`.
get_templateGet one email template by `brand_id` and `template_id`, including its HTML.
get_transactional_campaignGet one transactional campaign by `brand_id` and `campaign_id`.
list_brandsList your BigMailer brands. Almost every other tool needs a brand_id from here.
list_campaignsList bulk (newsletter) campaigns in a brand (`brand_id`).
list_contactsList contacts in a brand (`brand_id`), optionally only those on one list (`list_id`), with cursor paging.
list_fieldsList the custom contact fields in a brand (`brand_id`), with their merge tags.
list_listsList the contact lists in a brand (`brand_id`).
list_segmentsList the segments (saved contact filters) in a brand (`brand_id`).
list_sendersList the verified sender identities (emails or domains) in a brand (`brand_id`).
list_suppression_listsList the suppression lists (addresses that will not be emailed) in a brand (`brand_id`).
list_templatesList the email templates in a brand (`brand_id`).
list_transactional_campaignsList transactional email campaigns in a brand (`brand_id`).
send_test_emailVisible to othersSend a test email of a campaign's content (subject, from, HTML) to the addresses in `recipients`. Sends real emails to those addresses.
send_transactional_emailVisible to othersSend a transactional campaign (`campaign_id`) to one `email`, with optional merge `variables` and `field_values`. Sends the email immediately.
update_campaignVisible to othersUpdate a bulk campaign by `brand_id` and `campaign_id`. Setting `ready` to true sends or schedules it to all recipients.
update_contactChanges dataUpdate a contact by `brand_id` and `contact_id`: email, lists, field values or unsubscribes; the *_op fields choose whether to add, remove or replace.
upsert_contactChanges dataAdd a contact to a brand or update it if the email already exists: `brand_id`, `email`, and optional `list_ids`, `field_values` and unsubscribe settings.

Set up in three steps

1
Pick the app
Create a free PipMCP account and choose BigMailer from the app list.
2
Paste your key
Paste your BigMailer API key. In the BigMailer console open the API key management page, click Create Key, enter a name and click Create. Copy the key value.
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 BigMailer?

The AI can list your brands and read their contacts, lists, segments, fields, templates, senders, suppression lists and campaigns. It can add, update and delete contacts, create lists, create and update bulk campaigns, send test emails and send transactional emails.

Does the AI see my BigMailer credentials?

No. Your BigMailer 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. Sending emails, marking a campaign ready and deleting a contact can require your approval before they run. 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 PipMCP 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?

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

Can the AI send a campaign to my whole list by mistake?

A campaign is only sent when it is marked ready. If the AI creates or updates a campaign with ready set to true, it is sent or scheduled to every recipient, so you can require approval for create_campaign and update_campaign or keep them switched off.