For the convenience of anyone that may consider licensing and language it's written in a relevant part of their choice of software, here's the list of recommended e-mail clients in the submission with licensing and programming language info: - aerc: MIT, Go - alpine: Apache 2.0 (parts 4-clause BSD), C - claws mail: GPLv3, C - Gnus: LGPLv2+, elisp - KMail: GPLv2 (parts GFDLv1.2, parts LGPLv2.1), C++ - mutt: GPLv2, C -…
lumail, c++, gpl