Subcategory: Email Clients
License: Apache 2.0
Programing language: Java, Kotlin
First release: 2016
K-9 Mail – an open-source email client for Android focused on making it easy to chew through large volumes of email. K-9 supports IMAP, POP3 and Exchange 2003/2007 (with WebDAV). K-9 is a community developed project.
K-9 Mail was born when Jesse Vincent created a simple patch to the Email app included in Android 1.0.
The application is licensed under the Apache License, Version 2.0.