Email and newsletters
EmailChecker alternatives
2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.
The projects
knadh/listmonk★22,690 GitHub starsAGPL-3.0 licenceSelf-hosted, high-performance newsletter and mailing list manager with a modern web dashboard.Open on GitHub ↗mautic/mautic★10,310 GitHub starslicence unclearFull-featured open-source marketing automation platform for campaigns, segmentation, and analytics.Open on GitHub ↗
What you give up either way
- Global sending infrastructure and warmed IP pools / built-in reputation
- Deliberately-run deliverability tests across many mailbox providers at scale
- Guaranteed inbox placement or vendor-managed IP warm-up
- 24/7 operations support and on-call deliverability experts
- Any proprietary datasets or live reputational signals the vendor uses
An open-source project doing the core job proves a replacement is possible. It does not prove it matches EmailChecker, and it does not prove anyone has run it for a month. How we decide.