Postmark is an email delivery service specializing in fast, reliable transactional email such as receipts, password resets, and notifications. Now owned by ActiveCampaign, it targets developers who prioritize deliverability and consistent delivery speed. It is deliberately not a marketing or campaign tool, focusing instead on transactional sending plus inbound email processing. A free developer allowance supports testing, with paid plans priced by volume. The service is API-first and certified to SOC 2.
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Overview
- Founded
- 2010
- Pricing tier
- Mid
- Startup-friendly
- Yes
- Enterprise-ready
- Yes
Email API
- Free tier
- Yes: Free developer allowance (100 emails/month for testing).
- Transactional
- Yes
- Marketing
- No
- Inbound parsing
- Yes
- Deliverability focus
- Yes
- API-first
- Yes