1.flectar / mailBuilt from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 80 MB of RAM.androidcaldavcalendarcontactscross-platformdesktop-app+14 moreRustAGPL-3.01.7K total129 forks+109 starsfrom 1,616 · score 4.70
2.rustmailer / bichonBichon – A lightweight, high-performance Rust email archiver with WebUIbackupcompressionemailemail-archiveremail-archivingimap+9 moreRustAGPL-3.02.1K total90 forks+15 starsfrom 2,047 · score 2.77