Is Postmark or MailerSend cheaper?

Postmark has the lower entry price — Postmark starts at $0/mo and MailerSend at $0/mo.

Does Postmark or MailerSend support HIPAA?

HIPAA support — Postmark: —; MailerSend: —. Confirm current scope with the vendor.

Postmark vs MailerSend

A sourced, side-by-side comparison for transactional email. Postmark has the lower entry price. Every figure links to the public page it was captured from — the vendor's own wherever the vendor publishes the number, otherwise the named public source — with the date we captured it.

Postmark has the lower entry price — Postmark starts at $0/mo, MailerSend at $0/mo. Free tier: Postmark Yes, MailerSend Yes. HIPAA: Postmark —, MailerSend —.

As of 2026-09-03 · figures link to their source below

Side by side

Postmark

$0/mo entry

Entry price$0/mo (Free)

Free tierYes

HIPAA (BAA)—

SOC 2—

GDPRYes

Best forTeams where transactional deliverability is non-negotiable

MailerSend

$0/mo entry

Entry price$0/mo (Free)

Free tierYes

HIPAA (BAA)—

SOC 2—

GDPRYes

Best forSaaS teams needing both transactional email and SMS from one API

Sources — Postmark: postmarkapp.com (verified 2026-09-03) · MailerSend: mailersend.com (verified 2026-09-03)

Key features

Postmark: Message Streams — separate infrastructure for transactional vs. promotional to protect deliverability; Inbound email processing (parse incoming emails into webhooks); MCP server integration for AI coding tools (Claude Code, Cursor, GitHub Copilot); 95%+ customer satisfaction rating; premium support included on all paid tiers; EU data protection and GDPR compliance with DPA available

MailerSend: Drag-and-drop, HTML, and rich-text template editors in one platform; Transactional SMS API for US and Canada alongside email; DMARC monitoring dashboard; MCP server integration (advertised as NEW feature); GDPR-compliant data handling with EU data residency support

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