ActiveCampaign
Email marketing and CRM platform for customer experience automation
Open-Source Projects
Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
Self‑hosted mail server for inbound and outbound email.
Postal delivers a complete, self‑hosted email solution for sending and receiving messages, offering Docker deployment, extensive docs, and community support under an MIT license.
When teams consider Postal, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Transactional email for web applications
Reliable delivery of password resets, order confirmations, and notifications without third‑party fees.
Inbound email processing for support tickets
Receive and route customer emails directly into internal ticketing systems.
Bulk marketing campaigns for e‑commerce
Send newsletters to large subscriber lists while maintaining deliverability metrics.
Email compliance archiving for regulated industries
Store inbound and outbound messages on‑premise to meet data‑privacy and audit requirements.
Postal is primarily written in Ruby.
Postal is released under the MIT license.
Support is available via GitHub Discussions and the project's Discord community.
Yes, the repository includes Dockerfiles for containerized deployment.
Detailed installation guides are included in the project's documentation.
Project at a glance
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