postmarkapp.com
Postmark is a transactional email service for sending, receiving, and tracking application email. It provides server-level and account-level management features for messages, templates, domains, sender signatures, and delivery data.
Postmark exposes two authenticated HTTP APIs (server-level and account-level), an official CLI, and references an MCP server; it also supports SMTP for sending mail.
- Postmark MCP Serverdiscovered
- Postmark Server APIdiscovered
- Postmark SMTPdiscovered
- Postmark CLIdiscovered
Sign in to your Postmark account, open the relevant server, then go to the server API Tokens tab to copy a Server API token. Postmark’s docs state this token is found on the server credentials/API Tokens page and is used for server-level API requests; a server can have up to 3 API tokens. See API overview, API Explorer, and token explanation.
Sign in to Postmark, open the account-level API Tokens page in the Account section, and copy the Account API token. Postmark’s docs say this token is required for account-level actions such as creating servers and managing sender signatures or domains. See API Explorer and token explanation.
conventions · 1/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✓https://postmarkapp.com/llms.txt
- API catalog✗
/.well-known/api-catalog - OpenAPI document✗
/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json - MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing