mailio is a cross platform C++ library for MIME format and SMTP, POP3, IMAP protocols. It is based on the standard C++ 17 and Boost library.
karastojko/mailio has 485 GitHub stars.
It currently ranks #13325 daily, #14320 weekly, #17633 monthly by momentum on Trending Repos; its best-ever rank is #2216.
Trending Repos first recorded it on May 31, 2026.