
Postmark
7.6#2 in email deliverability softwareFree planFree planWebAPI
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| Fact | Postmark | Red Sift OnDMARC |
|---|---|---|
| Founded | 2010 | 2015 |
| Integrations | Official integrations include Slack, Zapier, Stripe, WordPress, Supabase, Bubble, Craft CMS, Netlify, and Gravity Forms. | Event Hub streams security and audit events through native SIEM integrations, webhooks, Slack, and other destinations. |
| Security | Postmark supports TLS and HTTPS, DKIM, SPF, DMARC, two-factor authentication, API permission controls, penetration testing, and DDoS protection. | The pricing page states that all plans include two-factor authentication and SAML/SSO, and that Red Sift is ISO 27001 certified. |
| Support | Postmark offers support by email, live chat, and one-on-one calls and reports a 95% customer happiness rating. | The plans list email and chat support; some tiers also list dedicated team or account manager support, account reviews, phone support availability, and custom SLAs. |
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.
You want what its maker publishes above — check its page for the details.