Postmark

Live 76 Actions 7 Events

Postmark Integration for AI Agents

Connect your AI agent to 76 Postmark actions via MCP, A2A, or SDK, with agent authentication, tool-calling execution, and security built-in, plus 7 events to subscribe to.

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Postmark AI Agent Actions

76 production-ready actions for your agent to do more on Postmark.

Read the Postmark docs

76 Actions

Send Email - Send a single email through Postmark

Send Batch Emails - Send a batch of up to 500 emails in a single API call

Send Email With Template - Send an email using a pre-defined template

Send Batch Emails With Templates - Send a batch of template-based emails in a single API call

List Templates - List all templates for the server

Get A Template - Retrieve a specific template by ID or alias

Create A Template - Create a new email template

Edit A Template - Edit an existing template

Delete A Template - Delete a template by ID or alias

Validate A Template - Validate template syntax and rendering

Outbound Message Search - Search outbound messages with optional filters

Outbound Message Details - Get full details of a sent message

Outbound Message Dump - Get raw SMTP source content of a sent message

Inbound Message Search - Search inbound messages with optional filters

Inbound Message Details - Get full details of a received inbound message

Bypass Rules For A Blocked Inbound Message - Bypass inbound rules for a blocked inbound message

Retry A Failed Inbound Message For Processing - Retry a failed inbound message webhook delivery

Message Opens - Search all message open events

Opens For A Single Message - Get open events for a specific message

Message Clicks - Search all message click events

Clicks For A Single Message - Get click events for a specific message

Get Delivery Stats - Get delivery statistics overview

Get Bounces - Search bounces with filters

Get Bounce - Get details for a single bounce

Get Bounce Dump - Get the raw bounce message content

Activate Bounce - Reactivate a bounced email address

Get Outbound Overview - Get outbound overview statistics

Get Sent Counts - Get sent email counts by day

Get Bounce Counts - Get bounce counts by type and day

Get Spam Complaints - Get spam complaint counts by day

Get Tracked Email Counts - Get tracked email counts by day

Get Email Open Counts - Get email open counts by day

Get Email Platform Usage - Get email platform usage

Get Email Client Usage - Get email client usage

Get Click Counts - Get click counts by day

Get Browser Usage - Get browser usage

Get Browser Platform Usage - Get browser platform usage

Get Click Location - Get click counts by email body location

List Webhooks - List all webhooks for the server

Get A Webhook - Get a specific webhook configuration

Create A Webhook - Create a new webhook

Edit A Webhook - Edit an existing webhook

Delete A Webhook - Delete a webhook

List Message Streams - List all message streams for the server

Get Message Stream - Get a specific message stream

Create Message Stream - Create a new message stream

Edit A Message Stream - Edit a message stream

Archive A Message Stream - Archive a message stream

Unarchive A Message Stream - Unarchive a previously archived message stream

Suppression Dump - Suppression dump for a message stream

Create A Suppression - Create email address suppressions

Delete A Suppression - Delete email address suppressions

List Inbound Rules - List inbound rules

Create Inbound Rule - Create an inbound rule to block emails matching a pattern

Delete Inbound Rule - Delete an inbound rule

Get The Server - Get the current server configuration

Edit The Server - Edit server configuration

List Servers - List all servers in the account

Get A Server - Get server details by server ID

Create A Server - Create a new server

Edit A Server - Edit a server's configuration by server ID

Delete A Server - Delete a server

List Sender Signatures - List all sender signatures in the account

Get Sender Signature - Get a sender signature’s details

Create A Signature - Create a new sender signature

Edit A Signature - Edit a sender signature

Delete A Signature - Delete a sender signature

Resend A Confirmation - Resend the confirmation email for a sender signature

List Domains - List all domains in the account

Get Domain - Get domain details

Create A Domain - Register a new domain

Edit A Domain - Edit a domain's Return-Path configuration

Delete A Domain - Delete a domain

Verify Domain DKIM - Verify DKIM DNS records for a domain

Verify Domain Return-Path - Verify Return-Path DNS records for a domain

Rotate Domain DKIM - Rotate DKIM keys for a domain

Postmark Webhook Events

7 real-time Postmark events your AI agent can subscribe to.

Webhooks for AI agents Read the Postmark docs

7 Events

Bounce Event Processes Postmark bounce events when an email delivery fails (hard bounce, soft bounce, or transient).
Delivery Event Processes Postmark delivery events when an email is successfully delivered to the recipient.
Open Event Processes Postmark open tracking events when a recipient opens an email.
Click Event Processes Postmark click tracking events when a recipient clicks a tracked link in an email.
Spam Complaint Event Processes Postmark spam complaint events when a recipient marks an email as spam.
Subscription Change Event Processes Postmark subscription change events when an email address is suppressed or reactivated.
Inbound Email Event Processes Postmark inbound webhook events when an email is received and parsed by Postmark. Requires manual configuration in Postmark server settings.

Do More, Build Less

Integration Infrastructure for Postmark AI Agents

Multiple Interfaces

Access integrations via API, AI SDKs, MCP & A2A.

Postmark MCP server

Managed Authentication

Pre-built authentication UI.

Agent auth

Falcon Engine

Every Postmark action runs on Falcon.

Agent Execution Engine

StackOne Defender

88.7% prompt injection detection.

Prompt injection defense

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"What impressed us most about StackOne is its ambition and clarity. They're creating infrastructure that modern software and the entire AI agent ecosystem can rely on. The depth of secure integrations, the pace of delivery, and the team's foresight into AI's future uniquely position StackOne to redefine this category."

Luna Schmid, Partner at GV

"We've been impressed by how quickly and deeply StackOne integrates with complex enterprise systems -- and now, with their focus on agent-to-agent interoperability, they're unlocking even more powerful use cases for customers. StackOne delivers all of the above in a universal layer -- without compromise."