Postmark

Transactional and bulk email delivery service with REST API and SMTP support

Postmark is an email delivery service for developers that sends transactional and broadcast emails via REST API or SMTP. It separates transactional and marketing traffic into separate Message Streams, provides webhooks for delivery and bounce events, email templates, inbound email processing, open and link tracking, and official SDKs for languages including Node.js, Python, Ruby, PHP, and .NET.

Category: Email & messaging
Pricing: freemium · from $15.00/mo
Free tier: yes
API: yes
MCP server: no
SDK: yes
Open source: no

#email #transactional-email #smtp #api #webhooks #email-delivery

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Listed 2026-10-22 · last verified 2026-10-22 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95

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API

curl https://toolgrep.com/api/products/postmark