Full read-write Claude connector for Postmark
Let Claude send templated email and manage suppressions in Postmark
Stop hopping into the dashboard to send a templated message, clean a suppression list, or chase a bounce. Claude does the sending and list hygiene where you already work, with every outbound send and list change waiting for your approval.
Postmark is a transactional and broadcast email delivery service for sending receipts, password resets, and notifications with fast, tracked delivery. People want Claude to do more than read send stats: to send templated messages, manage suppressions, and act on bounce and delivery activity.
What is a Postmark MCP server?
A Postmark MCP server is a small hosted service that exposes Postmark's data and actions to Claude over the Model Context Protocol, so Claude can draft, send, and triage messages inside your own account. We build it as a custom connector with separate read and write tools, and destructive actions stay gated behind your approval.
What can Postmark's current connector do today?
Postmark ships an official MCP server, but it is a fixed, generic tool set you run locally, not shaped to your workflow or hosted for your team. A custom Postmark connector maps the API into scoped read and write tools, adds the templates, suppression hygiene, and message-stream actions you actually run, and gates outbound send and suppression changes behind your approval.
What does full read-write Postmark access unlock?
Full read-write Postmark access lets Claude send a templated transactional message, trigger a broadcast through a message stream, add or clear an address from the suppression list, and investigate a bounce or spam complaint. The sending and list hygiene that meant hopping into the dashboard happen where you are already working.
- Send a templated transactional email through a specific message stream
- Trigger a broadcast send to a defined audience after you approve it
- Add or remove an address from the suppression list
- Reactivate a bounced or inactive recipient once it is safe to resend
- Look up delivery, bounce, and open activity for a recent message
- Create or update a server-side email template
Can Claude send a templated transactional email in Postmark?
Yes. With a full read-write Postmark connector, Claude can send a templated transactional message through the right message stream using your scoped server token. It composes the send and shows you exactly what will go out, but the outbound send is a gated action that runs only after you approve it.
Can Claude manage my suppression list in Postmark?
Claude can manage your suppression list in Postmark: adding or clearing an address, and reactivating a bounced or inactive recipient once it is safe to resend. These are separate, gated write actions, so Claude prepares the change and shows it to you, and it only executes after you confirm.
Can Claude investigate a bounce or delivery in Postmark?
Yes. Claude can look up delivery, bounce, open, and spam complaint activity for a recent message using read tools, then suggest a next step. It cannot reach servers or message streams your server token does not cover, and you can rotate or revoke that token to cut off access at any time.
How a Postmark connector works
We build a small MCP server that talks to Postmark over its REST API using a scoped server token, never broader than the token you provide. Read tools (message activity, bounces, templates) and write tools (send, suppression changes, template edits) are separated, and outbound send or list changes require your confirmation. If your account uses fixed sending IPs or webhook allowlisting, the connector can run behind a stable IP so those rules keep working.
Frequently asked questions
Can Claude send transactional email through Postmark, not just read activity?
Will Claude change my suppression list or send a broadcast without approval?
Does the connector get more access than my Postmark token allows?
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