K-9 Mail is an open source mail client with support for multiple accounts, search, IMAP push messaging, multi-folder synchronization, signaling, filing, signatures, auto-BCC, PGP / MIME and more! K-9 is a project developed by the community. If you want to help further improve the most popular open source email client on Android, join us!
Supported Android
{4.0.3 and UP}
Supported Android Version:-
Jelly Bean(4.1–4.3.1)- KitKat (4.4–4.4.4)- Lollipop (5.0–5.0.2) – Marshmallow (6.0 – 6.0.1) – Nougat (7.0 – 7.1.1) – Oreo (8.0-8.1) – Pie (9.0)