Postmark
Fast, reliable transactional email.
- What is Postmark?
- Postmark is a transactional email delivery service for developers, focused on getting application email to the inbox.
- What does it do?
- Sends transactional and broadcast email over SMTP or a REST API, with separate message streams so receipts are not mixed with bulk mail. Provides templates, inbound email parsing, delivery and bounce webhooks, and per-message activity logs.
- Who is it for?
- Development teams that need password resets, receipts and notification email to arrive reliably, and SaaS companies that care more about deliverability and support than campaign features.
Pricing
$15/mo
10k emails/month minimum
Paid
About
Founded 2010
Philadelphia, USA
Part of ActiveCampaign since 2022 (originally Wildbit).
About Postmark
Postmark is the deliverability-obsessed transactional email service that's been the gold standard for receipts and password resets since around 2010. Owned by ActiveCampaign since 2022, the product has continued shipping but kept its identity — separate sending streams (transactional vs. broadcast), industry-leading delivery times to inbox, and one of the cleanest activity-log views in the category. Pricing starts at $15/mo for 10k emails and scales evenly. The trade-off: it's not the cheapest, the DX has aged a bit relative to Resend, and there's no React Email-style integration.
✓Best for
- Apps where transactional email reliability is mission-critical (password reset, receipts, magic links)
- Teams that want the strict transactional/broadcast separation for deliverability
- Anyone migrating from Mandrill (Postmark is the standard recommendation)
Alternatives to Postmark
Tools that solve the same problem as Postmark, including the ones it's listed against.