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 vendor's own page and 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 2026-06-13 · 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 2026-06-13) · MailerSend: mailersend.com (verified 2026-06-13)

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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