
Postmark
7.6#2 in email deliverability softwareFree planFree planWebAPI
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| Fact | Postmark | Suped |
|---|---|---|
| Founded | 2010 | 2025 |
| Free tier limit | The free plan does not allow overages. | The Free plan includes one domain, up to 1,000 emails per month, and 14 days of report retention, with no credit card required. |
| Security | Postmark supports TLS and HTTPS, DKIM, SPF, DMARC, two-factor authentication, API permission controls, penetration testing, and DDoS protection. | The Enterprise and MSP pricing plans list SAML single sign-on and advanced security features. |
Postmark suits developers who need to send application email through an API or SMTP and track delivery events. Its inbound processing and message streams also suit services handling both incoming and different types of outgoing email.
Suped suits teams monitoring email authentication and deliverability, from single-domain users to MSPs managing multiple client workspaces. Its free plan is limited to one domain and 1,000 emails per month.