K-9 Mail is an open source email client with support for multiple accounts, search, IMAP push email, multiple folder sync, markup, archive, signatures, BCC-self, PGP / MIME, and more! K-9 is a community developed project. If you're interested in helping make the most popular open source email client on Android even better, join us! We are always happy to welcome new developers, designers, documenters, bug finders, and friends. With K-9, we don't mind you telling the world you're frustrated, but if you use our bug tracker, we have a better chance of fixing whatever is giving you a hard time.
Required Android Versions : Ice Cream Sandwich [4.0.3–4.0.4] - 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]