Gmail alternatives
3 open source tools you can use instead of Gmail
The most-starred open source alternative to Gmail is Stalwart. Other notable options: Mail-in-a-Box, Mail0. All of them are free to download and most can run on your own server.
Mail-in-a-Box15.5k
mail-in-a-box/mailinabox
Easy-to-deploy mail server for taking back control of your email.
Alternative to: Gmail
Mail010.9k
Mail-0/Zero
Open source email client you can shape to your own workflow.
Alternative to: Gmail, Superhuman
No tools match these filters.