Email

Best Free Android Apps: K-9 Mail – advanced email

K-9 Mail is a free and open source email client for Android.

It is designed as an alternative to the stock email clients included with the platform.

The client supports both POP3 and IMAP protocols and supports IMAP IDLE for real-time notifications.

Features include:

  • Works with IMAP and POP3. There’s Push IMAP support too.
  • Chews through large volumes of email.
  • Folder Sync.
  • Encryption with OpenKeychain support.
  • Per account notifications.
  • Unified inbox.
  • Message flagging.
  • Multiple identifies.
  • Signatures.
  • Attachment saving.
  • Emoji support.
  • SD card storage.
  • BCC to self.
  • Keyboard shortcuts
  • White and dark themes.

K-9 Mail

FavouriteK-9 Mail is a first-rate email client for Android. With support for unified inbox and multiple accounts, it offers most of the features we need although the minimum interval for email checking isn’t ideal.

Open source goodness at its finest!

With the fairly recent announcement that K-9 Mail will morph into Thunderbird for Android things are looking even more rosy.

Find all the great free Android apps that meet our eligibility criteria. Never pay for an Android app again!

Eligibility criteria

For an Android app to be awarded our love, it must satisfy the following criteria:
bullet-valid-icon High quality with a good set of features, stable in operation and mature software;
bullet-valid-icon No charge to use the app;
bullet-valid-icon No intrusive ads in the program;
bullet-valid-icon Open source and proprietary software can be included;
bullet-valid-icon Apps where additional functionality is available for a payment can be included where appropriate.
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