Postmark MCP. Check email stats, track bounces, and send emails.
Postmark MCP manages transactional email delivery directly through your AI client. Use this connector to send high-volume emails in batches or individually, manage all templates, and track real-time bounce rates without leaving your chat interface. It lets you audit sender domains, check performance statistics, and monitor account health programmatically.
Give Claude and any AI agent real-world access
Your agent sends single or bulk emails using verified signatures and defined templates.
You retrieve detailed statistics on email delivery, including sent volume and open rates.
The MCP pulls a history of bounced emails, allowing you to identify failure patterns.
You can query and get details on existing email templates or list all verified sending domains for audit purposes.
Your agent provides information about your entire Postmark server configuration, including listing available servers.
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What AI agents can do with Postmark with 11 Tools
These tools let your agent perform every function needed for email operations, from sending messages to checking server configuration.
Make your AI actually useful.
Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using Postmark MCPGet Delivery Stats
Retrieves a report detailing overall email delivery statistics for a specific period.
Get Outbound Stats
Gets delivery metrics specifically related to emails sent out from your account.
Get Template
Fetches the full content and details for a single, specified email template.
List Bounces
Retrieves a list of recently failed or bounced emails so you can track...
List Domains
Lists all verified sending domains that your Postmark account is authorized to use.
List Outbound Messages
Retrieves a list of messages that have been successfully sent from your account.
List Account Servers
Provides an overview and listing of all active servers associated with your Postmark account.
List Email Templates
Generates a comprehensive list of every email template available in your catalog.
Send Batch Email
Sends multiple emails to a group of recipients simultaneously using defined...
Send Email
Sends a single, immediate transactional email to one or more recipients.
Get Server Info
Retrieves specific configuration details and status information for your connected...
Security and governance baked right in.
Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
- Import from OpenAPI, Swagger, or YAML specs
- Create Agent Skills with progressive disclosure
- Deploy to edge with MCPFusion framework
- Built in DLP, auth, and compliance on each call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with Postmark, then connect any of our 5,200+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 5,200+ others, all in one place
- Add new capabilities to your AI anytime you want
- Connections are secured and governed automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog weekly
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Postmark. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.
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Sandboxed per request
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No stored credentials
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Policy on each call
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~60% cost reduction
Checking Email Health Feels Like Juggling Dashboards
Today, checking if a campaign worked means logging into the Postmark UI to see stats, then opening Google Sheets to track bounces, and maybe jumping over to your internal dashboard just to check template IDs. You spend 20 minutes copy-pasting numbers across three different tabs just to answer one question: 'Did it go out?'
With this MCP, the process changes entirely. Instead of logging in, you simply ask your agent for a delivery report. It uses tools like `get_delivery_stats` and `list_bounces`, pulls all that data into one place, and gives you a clean answer instantly.
Sending Emails with Postmark MCP
Manual sending involves selecting the correct template from a dropdown menu, manually inputting recipient lists, and hitting 'send.' If that list is big or if you need to send multiple variations, you're limited by the platform interface.
Now, your agent handles it. You tell it to `send_batch_email` with specific parameters. It manages the volume, verifies signatures, and confirms delivery status automatically—you just get the result.
What Postmark MCP does for your AI
Connecting Postmark gives your agent full control over transactional email operations. You stop logging into dashboards to check send metrics or look up failed messages. Instead, you just ask your AI client for what you need: 'Show me all bounces from last week' or 'List the current marketing templates.' The MCP lets you manage template content and verify domains used for sending.
It handles everything from single-message sends to large batches of emails, ensuring consistent messaging every time. Because this entire catalog lives within Vinkius, connecting your agent means gaining instant access to all these vital email tools in one place.
019dd13f-d308-70c6-8c93-0873ed47119f How to set up Postmark MCP
The bottom line is that you manage complex email infrastructure through simple conversational prompts.
First, you subscribe to this MCP and provide your unique Postmark Server Token (and optional Account Token) in the Vinkius interface.
Next, you trigger a request from your AI client—for example, asking it to 'list recent bounces' or 'send an email.'
Finally, the MCP executes the command using your credentials and returns structured data directly back to your conversation.
Who uses Postmark MCP
This connector is for anyone responsible for high-volume, reliable communication. If you're the person who spends too much time clicking between dashboards just to check if an email campaign went out correctly, this MCP saves your sanity.
You use it to audit bounce lists and ensure that every automated welcome sequence sends through the correct, up-to-date template.
You connect your agent to send critical transactional emails—like password resets or payment confirmations—and check delivery stats programmatically before deploying code.
You use it to verify account settings and pull out historical bounce information to troubleshoot complex client communication issues.
Benefits of connecting Postmark MCP
You stop manually compiling reports. Need to know how many emails bounced? Just ask your agent; it uses the list_bounces tool to pull a real-time history for you.
Forget logging into multiple dashboards. You can manage everything—from checking domain status with list_domains to reviewing template content using get_template—all in one chat window.
When sending emails, you don't need separate code snippets. Use the dedicated send_batch_email tool to handle large campaigns reliably and quickly.
Debugging delivery issues becomes immediate. If a campaign is underperforming, your agent can run both get_delivery_stats and get_outbound_stats to pinpoint exactly where the failure happened.
You gain full control over your infrastructure. You can check the health of your entire setup by running list_account_servers or getting granular details using get_server_info.
Postmark MCP use cases
The welcome sequence failed to send.
A new user reports they never got the onboarding email. You ask your agent, and it uses list_outbound_messages to confirm if an attempt was made, then checks get_template to verify the content used. It quickly determines if the problem is sending or template-related.
We suspect a bad sender domain.
Marketing runs a big campaign and sees poor performance. You ask your agent to run list_domains and compare that list against recent bounce data from list_bounces. This helps isolate if the issue is with an unverified sending source.
We need to send 50 personalized emails quickly.
Instead of writing a loop, you simply ask your agent to execute send_batch_email using the appropriate template ID. The system sends all messages at once and provides confirmation metrics.
Audit our entire email setup for compliance.
You tell your agent to run a full audit: check list_account_servers, verify templates with list_email_templates, and finally pull current performance numbers using get_delivery_stats.
Postmark MCP tradeoffs
What to watch out for, and the recommended way to handle each one.
Assuming all emails are sent.
A user assumes that because they ran a send command, the email went through. They don't check if any addresses were invalid or if there was an outage.
Always verify the outcome by running list_bounces after sending, and confirm overall health using get_delivery_stats. This shows you exactly which messages failed.
Hardcoding templates into code.
A developer writes a script that manually inputs HTML content for an email instead of pulling it from the approved Postmark template catalog.
Use list_email_templates to find the canonical template ID, and then use this MCP to ensure your agent sends emails using only the official version.
Ignoring server configuration changes.
The team updates its email sending structure but forgets to verify if the correct servers are active in the Postmark account settings.
Run list_account_servers and get_server_info before any major send campaign. This confirms you're connected to the right endpoint.
When to use Postmark MCP
Use this MCP if your primary concern is transactional email delivery reliability, template management, and detailed bounce analysis. You need a single source of truth for all Postmark data—sending history, performance metrics (get_delivery_stats), and failure reports (list_bounces). Don't use it if you are managing general user relationship communications or internal team chat; those require different connectivity tools (like CRM connectors). If your goal is just to write a simple email draft, writing it locally is fine. But when the stakes involve compliance, large-scale messaging, or needing verifiable proof of delivery and failure patterns, this MCP is essential.
Frequently asked questions about Postmark MCP
How do I find out if my domain is authorized for sending using Postmark MCP? +
You run the list_domains tool. This instantly shows you every verified sending domain linked to your account, so you know exactly what domains are safe to use.
Can I list all templates available in my account with Postmark MCP? +
Yes, the list_email_templates tool pulls a full catalog of every template ID and name. This is useful for auditing which versions your team uses.
What's the difference between sending one email and using Postmark MCP? +
Sending one email uses send_email. If you need to send many emails, like a newsletter blast, use send_batch_email for efficiency.
I need to check the history of failed sends using Postmark MCP. +
Use the list_bounces tool. It collects and reports on all recent bounces, allowing you to pinpoint invalid addresses or systemic failure patterns.