Our take
Pick Postmark if app teams who will stay on Free at $0 (100 emails / month, no overages) while they open a first Servers list, then buy Basic at $15 / month (10,000 emails, extra $1.80 / 1,000) when they leave the 100-email bucket. Pick Resend if app teams who will stay on Transactional Free $0 (3,000 emails, 100/day, 3 inboxes, no card) while they send a first receipt, then buy Pro at $20/month when they need
Best for
Postmark Transactional streams you start at $0
Resend Email you start at $0 (3,000 transactional / month, 100/day)
Free plan
Postmark $0 · / month. 100 emails / month. No overages. Never expires. For testing an integration or a side project
Resend $0 · 3,000 emails. 100/day cap. 3 domains. 3 inboxes. 10,000 automation runs (no overage). 30-day retention. Ticket support
Lowest paid
Postmark Basic $15
Resend Pro $20/mo
Next step up
Postmark Pro $16.50
Resend Pro marketing $40
Runs where
Postmark Hosted
Resend
Watch out
Postmark Free caps at 100 emails / month with no overages
Resend Free transactional is 100 emails/day
Last checked
Postmark 2026-10-23 · postmarkapp.com/pricing
Resend 2026-10-22 · resend.com/pricing
app teams who will stay on Free at $0 (100 emails / month, no overages) while they open a first Servers list, then buy Basic at $15 / month (10,000 emails, extra $1.80 / 1,000) when they leave the 100-email bucket.
Read the Postmark pageapp teams who will stay on Transactional Free $0 (3,000 emails, 100/day, 3 inboxes, no card) while they send a first receipt, then buy Pro at $20/month when they need 50,000 emails and no daily cap — and add Marketing only when they have a list.
Read the Resend page
