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Enterprise Layer Intelligence
Categories/Developer Tools/Postal
Postal

Postal

Founded by Erik Kostelnik in 2016

Deliver transactional emails and manage incoming messages on your own infrastructure

Pricing model

Free

Rating

★ Mixed Reviews

Time to value

Moderate Setup (1-3 hours)

You can use Postal to build and run your own full-featured email delivery server for web applications. It handles both outgoing transactional messages and incoming mail processing without relying on expensive third-party mail providers. You can route outgoing messages through multiple IP pools, monitor delivery rates, inspect message logs, and track bounces or spam complaints. Postal also includes HTTP APIs and webhooks so your web services can trigger messages, receive inbound emails directly, and verify domain authentication settings using SPF and DKIM records easily.

What Postal does

Send transactional emails via SMTP or REST APIForward inbound emails to application webhooksInspect message delivery logs and headersConfigure DKIM and SPF records for custom domainsAssign outgoing mail to dedicated IP poolsMonitor email bounce rates and delivery suppressionsInstall mail server components using Docker containersProcesses outgoing transactional email with full delivery trackingReceives incoming emails and forwards them via HTTP webhooksSupports multiple organizations, mail servers, and sending domainsRoutes outgoing mail through custom IP address poolsTracks delivery rates, bounces, opens, and spam complaintsAutomates DKIM key generation and SPF record verificationProvides a REST API for sending mail and querying delivery logs

Pricing breakdown

Pricing model: Free

Tutorials & Demos

Frequently asked

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Postal, email server, transactional email, SMTP server, incoming mail, open source mail, Docker, mail delivery, email API, webhooks, DKIM, SPF, bounce handling, spam tracking, self hosted email