Postal is a complete, fully featured mail delivery platform for websites and web servers, handling both incoming and outgoing email. It is positioned as an open source alternative to services like Sendgrid, Mailgun, or Postmark, designed to be run on the user's own servers. It includes a web interface for managing mail servers and viewing mail logs, plus features like webhooks, IP pools, and spam/antivirus integration.
What it's for
Sending outgoing mail from websites and web serversReceiving incoming mailViewing mail logs through a web interfaceNotifying HTTP endpoints via webhooks when messages are delivered or have issuesHolding messages automatically during development/testingSending mail from different IP addresses to build and maintain IP reputationChecking incoming and outgoing messages for spam and viruses
Features 10
- ClamAV integration
- Comprehensive web interface for managing mail servers
- Development mode that holds messages for testing
- Handles both incoming and outgoing email
- Horizontal scaling of the mail service
- IP pools for sending from different IP addresses to build reputation
- rspamd integration
- SpamAssassin integration
- View mail logs through the web interface
- Webhooks to notify HTTP endpoints on delivery or issues
Similar apps
useSendOpen sourcePay only for what you send, not for storing contactsPriceFrom $10/moTry freeFree planRuns onWebFeatures17
CloudMailinThe email API for developers.Price$25–$1799/moTry freeFree planRuns onWebFeatures19
MaillayerSelf-hostableSelf-hosted Resend alternativePriceOne-timeTry free—Runs onWebFeatures20
MumaraSelf-hostableEmail infrastructure that worksPriceFrom $5/moTry freeFree planRuns onWebFeatures20
phpListOpen sourcePowerful email marketing with specialist support and tailored pricing, powered by Open Source.Price$1–$8/moTry freeFree planRuns onWebFeatures19
turboSMTPSend your Transactional and marketing Emails safely, track your results and use powerful APIs designed for developers by developers.PriceFrom €14.95/moTry freeFree planRuns onWebFeatures19