Postmark

api.postmarkapp.com

Postmark is a transactional email API focused on reliable, fast delivery. It is designed specifically for application-generated emails like password resets, welcome emails, and notifications. Postmark provides detailed delivery stats, bounce tracking, template management, and message search with industry-leading delivery speeds.

Auth

api_key

Pricing

free

Spec version

1.0

Base URL

https://api.postmarkapp.com

Crawl failures

Last verified

2026-03-01T11:09:12.000Z

Health

This is a community-maintained manifest. Health monitoring is not available because this service doesn't host its own /.well-known/agent endpoint yet. Learn more about trust levels →

Capabilities

get_delivery_stats

Retrieve aggregate delivery statistics including sent counts, bounces, spam complaints, open rates, and click rates over a date range.

Detail: https://api.postmarkapp.com/capabilities/get_delivery_stats

manage_templates

Create, list, update, and delete email templates. Templates support HTML and text bodies, subject lines, and can be organized with aliases and layout templates.

Detail: https://api.postmarkapp.com/capabilities/manage_templates

search_outbound

Search and retrieve outbound messages with filters for recipient, sender, status, subject, tag, date range, and metadata.

Detail: https://api.postmarkapp.com/capabilities/search_outbound

send_email

Send a single transactional email with HTML and/or plain text body, attachments, open and link tracking, and metadata.

Detail: https://api.postmarkapp.com/capabilities/send_email

send_email_template

Send an email using a pre-defined template with dynamic variables. Templates let you separate email content from code and support layouts.

Detail: https://api.postmarkapp.com/capabilities/send_email_template

Agent Preview

This is what an AI agent sees when it discovers this service via the Gateway:

Service: Postmark
Description: Postmark is a transactional email API focused on reliable, fast delivery. It is designed specifically for application-generated emails like password resets, welcome emails, and notifications. Postmark provides detailed delivery stats, bounce tracking, template management, and message search with industry-leading delivery speeds.
Auth: api_key
Capabilities:
  - get_delivery_stats: Retrieve aggregate delivery statistics including sent counts, bounces, spam complaints, open rates, and click rates over a date range.
  - manage_templates: Create, list, update, and delete email templates. Templates support HTML and text bodies, subject lines, and can be organized with aliases and layout templates.
  - search_outbound: Search and retrieve outbound messages with filters for recipient, sender, status, subject, tag, date range, and metadata.
  - send_email: Send a single transactional email with HTML and/or plain text body, attachments, open and link tracking, and metadata.
  - send_email_template: Send an email using a pre-defined template with dynamic variables. Templates let you separate email content from code and support layouts.