What is Postmark?

Answer

About Postmark

Postmark is email service for transactional and marketing email.

Email service for transactional and marketing email. Postmark is a reliable transactional email service with industry-leading deliverability — long-running indie SaaS now part of ActiveCampaign.

Source

This answer is drawn from the Postmark listing on Startup Spotlight, last updated May 25, 2026. For the full profile, see the Postmark listing.

Other questions about Postmark

• When was Postmark launched?

  Postmark launched in 2010.