About
Postmark provides email delivery for applications through an API and SMTP. It supports transactional messages and broadcast email, using separate message streams for the two types of traffic. Published features include templates, inbound email processing, analytics and webhooks.
The service supplies developer documentation and libraries for several programming languages. Postmark is part of ActiveCampaign. Its website states that it has delivered email since 2010; this is a service history statement rather than a founding date for the former owner.
