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Transactional email service ActiveCampaign-owned since May 2022
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Postmark: Transactional email service

By Alaa Touil. Reviewed by Rabeb. Read our testing methodology →

Postmark is a Transactional email service founded in 2010, headquartered in the United States. Starting at $15/mo, it targets Dev-first SaaS teams sending mission-critical transactional email. Our verdict: First-class transactional API with 13 SDKs and official MCP server. Watch for: Zero-tolerance ban policy plus no annual pricing discount. Rated 7.1/10 overall across ease of use, deliverability, and pricing value.

Explore Postmark on SMTPedia

ReviewRated 7.1/10. First-class transactional API with 13 SDKs and official MCP server.PricingFrom $15/mo on Basic plan · 10K emails/mo. Every tier, hidden fee, and overage.Alternatives11 competitors ranked by use case, price, and switching cost.DeliverabilityRated 9.0/10 on shared IPs. Inbox placement per mailbox provider.FeaturesEvery feature tested and rated. Strongest: Reliable transactional delivery plus rich webhooks.SMTP settingsSMTP relay: Yes. Hostnames, ports, auth, and rate limits.IntegrationsNative connectors, Zapier bridges, and API integrations.API + MCPREST API with official MCP server. Endpoints, SDKs, and rate limits.TutorialStep-by-step setup, from signup to first campaign. Intermediate level.

Frequently asked questions

Is Postmark worth it in 2026?

Our full editorial review covers pricing, deliverability, ease of use, support quality, and API/MCP maturity. Read the Postmark review →

How much does Postmark cost?

All pricing tiers, hidden fees, refund policy, and the true cost per email are broken down in the pricing tab. See Postmark pricing →

What are the SMTP settings for Postmark?

Hostnames, ports, authentication, rate limits, and DKIM/SPF configuration for Postmark. See SMTP settings →

Does Postmark have an official MCP server?

Our API tab covers Postmark's REST API version, SDKs, rate limits, and MCP server support (official, community, and commercial wrappers). See API + MCP →

This review follows our email infrastructure testing methodology. We disclose affiliate relationships in our editorial independence policy.

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