Postmark MCP server

Connect Postmark to Claude, ChatGPT, Cursor, Claude Code, Codex, Gemini, GitHub Copilot and any other MCP client, for your whole team. Metorial adds security, governance, and tracing, and gives everyone one Magic MCP URL to connect.

What you can do with the Postmark MCP server

Ask your agent in plain language. Each of these maps to a real tool on the server.

  • Use the get statistics tool in Postmark
  • Use the manage suppressions tool in Postmark
  • Use the send email tool in Postmark
  • Use the manage webhooks tool in Postmark
  • Use the search messages tool in Postmark
  • Use the get bounces tool in Postmark

Supported Tools

get_statistics

Get Statistics

Retrieve aggregate sending statistics from your Postmark server. Get an overview of sent counts, bounces, spam complaints, open rates, and click rates. Filter by date range, tag, and message stream.

manage_suppressions

Manage Suppressions

View, create, or delete email suppressions in a Postmark message stream. Suppressed addresses will not receive emails. Use this to list current suppressions, manually suppress addresses, or remove suppressions to re-enable sending.

send_email

Send Email

Send a transactional or broadcast email via Postmark. Supports HTML and plain text bodies, CC/BCC recipients, attachments, custom headers, metadata, and open/click tracking. The sender must be a registered and confirmed sender signature in Postmark.

manage_webhooks

Manage Webhooks

List, get, create, update, or delete webhooks on your Postmark server. Webhooks notify your application about message events like bounces, deliveries, opens, clicks, spam complaints, and subscription changes.

search_messages

Search Messages

Search and retrieve outbound or inbound messages processed by your Postmark server. Filter by recipient, sender, subject, tag, status, date range, and metadata. Useful for auditing, debugging delivery issues, or finding specific messages.

get_bounces

Get Bounces

Retrieve email bounce records from your Postmark server. Search and filter bounces by type, recipient, tag, date range, and message stream. Can also fetch delivery statistics with bounce type breakdowns, or reactivate a bounced email address.

manage_message_streams

Manage Message Streams

List, get, create, update, archive, or unarchive Postmark message streams. Message streams separate your email sending into categories (Transactional, Broadcasts, Inbound) for better organization and deliverability.

send_template_email

Send Template Email

Send an email using a pre-defined Postmark template. Pass dynamic variables through the template model to populate the template. Identify the template by its numeric ID or string alias.

get_server

Get Server

Retrieve your Postmark server's configuration and settings including name, color, SMTP status, tracking preferences, webhook URLs, and inbound settings.

manage_templates

Manage Templates

List, get, create, update, or delete email templates on your Postmark server. Templates allow reusable HTML/CSS layouts with dynamic variables for consistent transactional and broadcast emails.

send_batch_template_emails

Send Batch Template Emails

Send up to 500 Postmark template emails in one batch API call. Each message can target a template by ID or alias and pass its own template model, recipients, headers, attachments, metadata, tracking settings, and message stream.

manage_sender_signatures

Manage Sender Signatures

List, get, create, update, delete, or resend confirmation for Postmark sender signatures. Sender signatures authorize individual From addresses for sending. Requires an Account API Token.

manage_inbound_rules

Manage Inbound Rules

List, create, or delete Postmark inbound rule triggers. Inbound rules block specific email addresses or domains from sending to your Postmark inbound address.

manage_domains

Manage Domains

List, get, create, update, delete, and verify Postmark sending domains. Use this for domain setup, DKIM records, Return-Path records, and DKIM rotation. Requires an Account API Token.

send_batch_emails

Send Batch Emails

Send up to 500 individually addressed Postmark emails in a single batch API call. Each message can have its own sender, recipients, subject, body, headers, attachments, metadata, tracking settings, and message stream.

Connect Postmark to your AI client

Every client uses the same Magic MCP URL, and so does any other MCP client. Add it once and sign in with SSO.

  1. Enable Postmark in Metorial. In your Metorial portal, enable the Postmark MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
  2. Add a custom connector. Open Customize, then Connectors. Select Add, then Custom, then Web.
  3. Paste your Metorial MCP URL. Name it Metorial, paste your Magic MCP URL (<your-magic-mcp-url>) and continue.
  4. Sign in. Select Add and sign in to load Postmark tools.

Run Postmark through the Metorial gateway

One governed layer for every app your agents reach, not a separate connector per tool.

  • Give Postmark and every other app to your whole team through one MCP gateway, behind your SSO.
  • Scope which teams and agents can use Postmark tools with role-based access control, and trace every call.
  • Prefer to run it yourself? Metorial is open source and self-hostable.

More integrations teams use with Postmark

Slack

Slack: connect with bot OAuth or user OAuth to work with messages, conversations, search, files, Canvases, Lists, profiles, reactions, reminders, and workspace productivity settings.

Sharepoint

Manage SharePoint sites, document libraries, lists, and files. Create, read, update, and delete lists and list items with custom columns. Resolve site users to numeric Person/Group LookupId values. Upload, download, move, copy, and version files in document libraries. Search across sites, files, folders, lists, and list items using Microsoft Search. Manage permissions at site, list, and item levels with granular access control. Define and manage content types and site columns. Retrieve site properties and search for sites across Microsoft 365.

Microsoft Outlook

Send, read, reply to, forward, and manage email messages in user mailboxes. Organize messages into folders, apply categories, flags, and importance levels. Manage file and item attachments. Create, update, delete, and respond to calendar events and meetings. Find available meeting times, manage attendees, handle recurrence, and work with shared or delegated calendars. Create, read, update, and delete contacts, organize them into contact folders, and manage contact photos. Manage tasks and task lists via Microsoft To Do, including due dates, reminders, recurrence, and checklist items. Support for Focused Inbox, @-mentions, mail tips, send-on-behalf, and send-as capabilities.

Gmail

Send, read, and search email messages with support for recipients, attachments, and HTML content. Create, update, and send drafts. Manage conversation threads and organize messages with labels. Search mailboxes using Gmail query syntax (from, to, subject, date, attachment filters). Manage filters and vacation responders, update the primary address's display name and signature, and view send-as aliases, forwarding addresses, and auto-forwarding status. Import and insert messages for migration.

Google Drive

Upload, download, create, copy, move, rename, trash, and permanently delete files and folders in Google Drive. Search for files using complex queries filtering by name, MIME type, owner, modification date, labels, and other metadata. Share files and folders with specific users, groups, or domains with role-based permissions (owner, writer, commenter, reader). Manage shared drives and their members. Export Google Workspace files (Docs, Sheets, Slides) to standard formats like PDF, DOCX, and XLSX. Track file revision history and restore earlier versions. Create, read, update, and delete threaded comments and replies on files. Read label definitions and search files by label. Browse the Drive apps installed for your account. Store app-specific data in a hidden per-user folder.

Confluence

Create, read, update, and delete pages, blog posts, comments, and attachments in Confluence spaces. Manage spaces, permissions, labels, and content restrictions. Search content using Confluence Query Language (CQL). Upload and download file attachments with versioning. Manage users, groups, and group memberships. Create and manage whiteboards, databases, folders, and templates. View and update inline tasks. Access audit logs.

Technical notes for Postmark

Send transactional and broadcast emails via API with support for HTML, plain text, attachments, and batch sending. Create and manage reusable email templates with dynamic variables. Track email delivery, opens, link clicks, bounces, and spam complaints. Manage message streams to separate transactional and broadcast emails. Search and retrieve sent and received message details. Handle bounce management and reactivate bounced addresses. Manage suppression lists for inactive recipients. Process inbound emails with parsing and routing rules. Configure webhooks for delivery events, bounces, opens, clicks, and spam complaints. Manage sending domains, sender signatures, DNS verification, and DKIM keys. Retrieve aggregate sending statistics filtered by date and tag. Manage servers and account-level settings.

Frequently asked questions

Common questions about connecting Postmark to AI agents with Metorial.

  1. How many tools does the Postmark MCP server have?
    The Postmark MCP server exposes 15 tools, including Get Statistics, Manage Suppressions, Send Email. Each one is governed and traced through Metorial.
  2. Postmark exposes tools your agents call on demand; it does not publish event triggers yet. Everything still runs through one governed MCP URL.
  3. Any MCP client, including VS Code, Windsurf, Zed, OpenCode and Grok. Each one reaches the Postmark MCP server through the same Metorial URL.
  4. Use role-based access control to decide which teams, users, and agents can use Postmark and which of its tools they can call.
  5. Yes. Metorial is open source, so you can run the Postmark MCP server yourself or use the hosted gateway.

Connect Postmark to production AI agents

See how Metorial gives your team governed access to Postmark, with tracing and security controls built in.