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Connect Postmark to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Run your transactional email operations through a chat interface.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 10 capabilities

We ship only the actions that matter.

Capability set01 / 03

01-04

4 capabilities in this set.

Part of 10 available through Postmark.

  1. 01

    Update server config

    This capability lets you change your Postmark server name.

  2. 02

    Get bounce logs

    Use this to pull the raw SMTP logs for a specific bounce event.

  3. 03

    List spam complaints

    This capability retrieves a list of recent spam complaints reported to your account.

  4. 04

    Get delivery stats

    Get the latest delivery metrics and health data for your Postmark server.

Capability set02 / 03

05-07

3 capabilities in this set.

Part of 10 available through Postmark.

  1. 05

    Get server config

    This capability retrieves the current configuration settings for your Postmark server.

  2. 06

    Delete template

    Use this to remove an existing email template from your account.

  3. 07

    List bounces

    This capability provides a list of recent email bounces.

Capability set03 / 03

08-10

3 capabilities in this set.

Part of 10 available through Postmark.

  1. 08

    List templates

    Get a list of all email templates currently stored in your Postmark account.

  2. 09

    Send email

    This capability sends a plain text or HTML email directly through Postmark.

  3. 10

    Send with template

    Use this to send an email by triggering a specific Postmark template.

Real work

What teams actually run

01

Troubleshooting Bounces

Ask your agent to find the exact SMTP error code for a failed delivery to a specific user.

02

Template Testing

Trigger a specific HTML template to a test address to verify layout changes instantly.

03

System Auditing

Check recent spam complaints or delivery stats to monitor your sender reputation.

04

Configuration Updates

Change server names or inspect settings through your AI client.

Automate a task

Put Postmark to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Postmark works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put Postmark to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

909ms average. Fast in production.

Postmark is checked daily against the live service.

Daily averagePeak 1089ms
Oct 3Today
Fastest day
768ms
Slowest day
1089ms
14-day trend
Slowing+9%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 10 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Postmark, so you can see the experience inside your AI.

It does not authenticate your account with Postmark. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Postmark Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_KPq8li4s6pf752WqbtPQw1PlrIw8fp2WAbMU1CoL/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Postmark capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "postmark-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_KPq8li4s6pf752WqbtPQw1PlrIw8fp2WAbMU1CoL/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Postmark in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Postmark owners hand off.

This MCP is built for technical professionals who manage transactional email workflows.

  • 01

    Backend Engineers

    They use the MCP to check webhook constraints or edit server settings without leaving their IDE.

  • 02

    Support Teams

    They investigate hard bounces and specific delivery failures to help users with missing emails.

  • 03

    QA Testers

    They trigger test templates and verify delivery metrics to validate email flows.

FAQ

Questions Postmark owners ask.

  • 01

    How do I connect this MCP to my AI client?

    You subscribe to the Postmark MCP on Vinkius and provide your Postmark Server Token. Once connected, you can use it immediately in any MCP-compatible client like Claude or Cursor.

  • 02

    Can I send emails using my existing Postmark templates?

    Yes. You can use the send_with_template capability to trigger any template you have already created in your Postmark account.

  • 03

    What kind of error logs can the AI access?

    The AI can access raw SMTP logs via the get_bounce_logs capability, which helps identify specific reasons for delivery failures like DNS timeouts or spam rejections.

  • 04

    Is my Postmark token secure?

    Yes. Vinkius hosts the MCP and manages your credentials securely so you don't have to handle them manually in your client.

  • 05

    Can I use this to monitor my sender reputation?

    Yes. You can ask your agent to list recent spam complaints or retrieve delivery statistics to keep an eye on your account health.

  • 06

    Can the AI send emails dynamically using my existing templates?

    Yes. Using send_with_template, you merely tell the AI the template ID and the JSON parameters (Template Model). It perfectly injects the data into your Postmark layouts.

  • 07

    Is it possible to debug a complex email bounce natively inside Claude?

    Absolutely. First command list_bounces to find failing message UUIDs. Then ask the agent to run get_bounce_logs on that UUID—it will interpret the pure SMTP error code for you naturally.

  • 08

    Which Postmark token should I use?

    This MCP server uses the Postmark Server Token. Each Server in Postmark functions as an isolated environment (e.g. Production Server vs Staging Server).

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