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Connect Postmark Extended (#1) 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. Control your transactional email workflows through natural language.

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 · 72 capabilities

We ship only the actions that matter.

Capability set01 / 18

01-04

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 01

    Get outbound message details

    This capability pulls the full event history and specific details for a single outbound message.

  2. 02

    Get outbound opens clients stats

    Use this to see how different email clients are interacting with your outbound messages.

  3. 03

    Create message stream

    This capability creates a new message stream in your Postmark account.

  4. 04

    Create webhook

    Use this to set up a new webhook for your stream.

Capability set02 / 18

05-08

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 05

    Get outbound bounces stats

    This capability retrieves the total bounce counts for your outbound messages.

  2. 06

    Create suppressions

    This capability adds up to 50 suppressions to a specific message stream.

  3. 07

    Create template

    Use this to build a brand new email template.

  4. 08

    Delete domain

    This capability removes a domain at the account level.

Capability set03 / 18

09-12

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 09

    Delete sender signature

    Use this to remove a sender signature from your account.

  2. 10

    Edit current server

    This capability modifies the configuration for your current server.

  3. 11

    Edit domain

    Use this to update domain settings at the account level.

  4. 12

    Edit message stream

    This capability allows you to change the settings of an existing message stream.

Capability set04 / 18

13-16

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 13

    Edit server

    Use this to change your account level server settings.

  2. 14

    Edit template

    This capability lets you update the content or settings of an existing template.

  3. 15

    Get bounce

    Use this to get specific details regarding a single bounce event.

  4. 16

    Get bounce dump

    This capability retrieves the raw SMTP dump for a specific bounce.

Capability set05 / 18

17-20

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 17

    Get bulk request status

    Use this to check the progress of a bulk email request.

  2. 18

    Get current server

    This capability fetches the configuration for your current server.

  3. 19

    Get data removal status

    Use this to check the status of a data removal request.

  4. 20

    Get domain

    This capability retrieves details for a specific account domain.

Capability set06 / 18

21-24

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 21

    Get outbound clicks stats

    Use this to see how many clicks your outbound messages are generating.

  2. 22

    Get outbound message dump

    This capability gets the raw source code for a specific outbound message.

  3. 23

    Get outbound opens stats

    Use this to get the total open counts for your outbound messages.

  4. 24

    Get outbound sends stats

    This capability provides the total number of sent messages.

Capability set07 / 18

25-28

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 25

    Get outbound stats

    Use this to get a high level overview of your outbound message statistics.

  2. 26

    Get sender signature

    This capability retrieves details for a specific account sender signature.

  3. 27

    Get server

    Use this to get the details of a specific account server.

  4. 28

    Get template

    This capability pulls the details of a specific email template.

Capability set08 / 18

29-32

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 29

    List sender signatures

    Use this to see all sender signatures on your account.

  2. 30

    List servers

    This capability lists every server in your account.

  3. 31

    List suppressions

    Use this to see the current suppressions for a message stream.

  4. 32

    List templates

    This capability returns a list of all templates on your server.

Capability set09 / 18

33-36

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 33

    List webhooks

    Use this to see all webhooks configured for a stream.

  2. 34

    Push templates

    This capability copies templates from one server to another.

  3. 35

    Resend sender signature

    Use this to trigger a new confirmation email for a sender signature.

  4. 36

    Retry inbound message

    This capability attempts to reprocess an inbound message that failed.

Capability set10 / 18

37-40

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 37

    Rotate domain dkim

    Use this to trigger a DKIM key rotation for a domain.

  2. 38

    Search outbound clicks

    This capability searches through click events for your outbound messages.

  3. 39

    Search outbound opens

    Use this to search for specific open events in your outbound mail.

  4. 40

    Unarchive message stream

    This capability restores an archived message stream.

Capability set11 / 18

41-44

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 41

    Verify domain dkim

    Use this to trigger a DKIM verification check for a domain.

  2. 42

    Create sender signature

    This capability creates a new sender signature at the account level.

  3. 43

    Create server

    Use this to set up a new server in your account.

  4. 44

    Delete server

    This capability removes a server from your account.

Capability set12 / 18

45-48

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 45

    Delete suppressions

    Use this to remove suppressions and reactivate addresses in a stream.

  2. 46

    Delete template

    This capability deletes a specific email template.

  3. 47

    Delete webhook

    Use this to remove a webhook from a stream.

  4. 48

    Edit sender signature

    This capability updates an existing account sender signature.

Capability set13 / 18

49-52

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 49

    Edit webhook

    Use this to modify the settings of an existing webhook.

  2. 50

    Get delivery stats

    This capability retrieves delivery and bounce statistics.

  3. 51

    Get inbound message details

    Use this to get the details of a specific inbound message.

  4. 52

    Get message stream

    This capability pulls the details for a specific message stream.

Capability set14 / 18

53-56

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 53

    Get outbound opens platforms stats

    Use this to see which platforms are opening your outbound emails.

  2. 54

    Get outbound spam stats

    This capability retrieves spam complaint counts for your outbound mail.

  3. 55

    Get outbound tracked stats

    Use this to get counts for all tracked outbound emails.

  4. 56

    Get webhook

    This capability retrieves the details of a specific webhook.

Capability set15 / 18

57-60

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 57

    List domains

    Use this to see all domains associated with your account.

  2. 58

    List message streams

    This capability lists all message streams in your account.

  3. 59

    Request data removal

    Use this to request the removal of recipient data for GDPR or CCPA compliance.

  4. 60

    Search bounces

    This capability searches through your bounce records.

Capability set16 / 18

61-64

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 61

    Search inbound messages

    Use this to search through your received inbound messages.

  2. 62

    Search outbound messages

    This capability searches through your sent outbound messages.

  3. 63

    Send batch emails

    Use this to send a batch of emails through Postmark.

  4. 64

    Send bulk emails

    This capability sends large scale bulk email distributions.

Capability set17 / 18

65-68

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 65

    Validate template

    Use this to check the syntax of an email template.

  2. 66

    Verify domain return path

    This capability triggers a Return-Path verification for a domain.

  3. 67

    Send email

    Use this to send a single transactional email.

  4. 68

    Send email with template

    This capability sends an email using a specific Postmark template.

Capability set18 / 18

69-72

4 capabilities in this set.

Part of 72 available through Postmark.

  1. 69

    Activate bounce

    Use this to reactivate an email address that previously bounced.

  2. 70

    Add domain

    This capability adds a new domain to your account.

  3. 71

    Archive message stream

    Use this to archive an existing message stream.

  4. 72

    Bypass inbound message

    This capability allows you to bypass rules for a blocked inbound message.

Real work

What teams actually run

01

Automated Testing

A developer triggers a single transactional email to a test address to verify a new feature's mail flow.

02

Template Updates

A marketing user asks the agent to change the text in a 'Welcome' template and validate it before it goes live.

03

Delivery Troubleshooting

An engineer asks the agent to check why a specific message bounced and retrieves the SMTP dump.

04

Bulk Campaigns

An operations lead instructs the agent to start a bulk email request for a large list of recipients.

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

1723ms average. Fast in production.

Postmark is checked daily against the live service.

Daily averagePeak 1985ms
Oct 3Today
Fastest day
1345ms
Slowest day
1985ms
14-day trend
Slowing+10%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 72 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_0kWRWI9CKHfn2LoLRpwQevUBwFA4SoruFIdWN2E8/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-extended-1-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_0kWRWI9CKHfn2LoLRpwQevUBwFA4SoruFIdWN2E8/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 need to manage email delivery without leaving their development environment.

  • 01

    Developers

    Send test emails and manage templates from within an IDE.

  • 02

    Marketing Ops

    Update email copy or validate template structures using natural language.

  • 03

    Support Teams

    Automate personalized follow-ups and notification workflows.

FAQ

Questions Postmark owners ask.

  • 01

    How do I connect my Postmark account?

    You subscribe to the MCP on Vinkius and provide your Postmark Server Token. Once connected, your AI client can immediately start using the capabilities.

  • 02

    Can I send bulk emails with this MCP?

    Yes, you can use the send_bulk_emails capability to handle large scale distributions.

  • 03

    Does this MCP support email templates?

    Yes, you can create, edit, delete, and validate templates, or send emails using existing templates via send_email_with_template.

  • 04

    Can I check if my emails were opened?

    Yes, the MCP includes capabilities like get_outbound_opens_stats and get_outbound_clicks_stats to track recipient interaction.

  • 05

    Is my data secure?

    Vinkius manages your credentials securely, and the MCP uses your existing Postmark authentication to perform actions.

  • 06

    Can I send multiple emails in a single request?

    Yes! You can use send_batch_emails to send up to 500 messages at once, or send_bulk_emails for larger distributions using templates and recipient variables.

  • 07

    How do I use my existing Postmark templates?

    Use the send_email_with_template capability. You just need to provide the TemplateId or TemplateAlias and the TemplateModel containing your dynamic variables.

  • 08

    Can I manage my templates without leaving the chat?

    Absolutely. You can use list_templates, create_template, edit_template, and delete_template to perform full CRUD operations on your Postmark server templates.

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