Email Delivery / Transactional Email · Head to head
Postmark vs SendGrid
Both products compete in Email Delivery / Transactional Email. Email delivery and transactional email platforms provide the sending infrastructure that applications use to reliably deliver password resets, order confirmations, notifications, and other triggered messages to recipients' inboxes. They manage IP reputation, bounce handling, email authentication (SPF, DKIM, DMARC), and ISP relationships so developers don't have to operate their own mail servers. Here are the facts the B4 Index maintains on each, side by side.
The two files, side by side
The decision underneath the comparison
Choosing between Postmark and SendGrid assumes you're buying Email Delivery / Transactional Email at all. That's the prior question, and the B4 Index scores it on two axes: how much Email Delivery / Transactional Email differentiates you, and how far AI has come at building it. Read the build-versus-buy considerations for Email Delivery / Transactional Email before you shortlist either product.