Is the Mailgun MCP server free?

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

How do I connect Mailgun to Claude or Cursor?

Connect Mailgun in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

What can my agent do in Mailgun?

It can call 9 tools, including Send Email, Validate Email, Add Mailing List Member, and chain them with steps in other apps inside the same run.

Is it safe to let an agent call Mailgun?

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.

Mailgun MCP server

Email delivery service for sending, receiving, and tracking emails

Mailgun is not a separate install. One Activepieces MCP server exposes it alongside 760+ other apps, behind a single URL.

Start building See the Mailgun integration

Tools: 9
Works with: Any MCP client
Auth: Custom auth
License: MIT, open source
Updated: September 2026

About the Mailgun MCP server

Connect Mailgun once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches Mailgun and 760+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

Mailgun tools your AI can run

Once connected, your assistant can call any of these Mailgun actions by asking in plain language.

Send Email
Send an email using your Mailgun domain
9 fields
Validate Email
Validate an email address using Mailgun validation service. Requires a Mailgun account with email validation enabled.
2 fields
Add Mailing List Member
Add a new member to a Mailgun mailing list
6 fields
Get Events
Retrieve email events from your Mailgun domain (deliveries, failures, opens, clicks, etc.). Useful for monitoring and alerting.
6 fields
Get Domain Stats
Retrieve aggregated email statistics for a Mailgun domain (delivered, failed, opened, etc.). Useful for monitoring delivery health and detecting anomalies.
3 fields
List Bounces
Retrieve the list of bounced email addresses for a Mailgun domain. Useful for cleanup after delivery issues or spam attacks.
2 fields
Delete Bounces (Bulk)
Remove bounced addresses from the Mailgun suppression list, either all at once for a domain or a single address.
3 fields
Get Domain Health
Fetch the health of a Mailgun domain: current state, whether it has been disabled, and DNS verification status for sending and receiving records.
1 field
Custom API Call
Make a custom API call to a specific endpoint
10 fields

Triggers

Mailgun events your agent can watch

These start a run the moment something happens in Mailgun, so work gets picked up on its own.

New Bounce Event
Triggers when an email permanently fails to deliver (hard bounce) in Mailgun
1 field
New Complaint Event
Triggers when a recipient reports an email as spam in Mailgun
1 field
New Delivery Event
Triggers when an email is successfully delivered in Mailgun
1 field
New Failed Delivery Event
Triggers when an email temporarily fails to deliver in Mailgun (will be retried)
1 field
New Open Event
Triggers when a recipient opens an email in Mailgun
1 field
New Click Event
Triggers when a recipient clicks a tracked link in an email in Mailgun
1 field
New Unsubscribe Event
Triggers when a recipient unsubscribes from emails in Mailgun
1 field
Bulk Bounce Threshold Exceeded
Triggers once when too many emails bounce within a set time period. Useful for catching spam attacks or deliverability problems early.
4 fields

Give your assistant Mailgun

Connect Mailgun once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 760+ other apps. Free to start.

Get your server URL Talk to sales

Mailgun MCP, answered.

No. That is the point of it. One Activepieces server exposes Mailgun alongside every other piece you connect, so your client keeps a single connection.