English

K-9 Mail - Email management & organization

Efficiently manage multiple email accounts with customizable settings and security features.

K-9 Mail
  • 8.0b4 Version
  • 3.9 Score
  • 4M+ Downloads
  • Free License
  • 3+ Content Rating
Download Android APK (10.21 MB)
Old Versions
K-9 Mail K-9 Mail K-9 Mail K-9 Mail K-9 Mail K-9 Mail K-9 Mail
CONS

User Interface Limitations

Introducing K-9 Mail

K-9 Mail stands out as an open-source email tool compatible with a vast array of email service providers. The app comes equipped with numerous functionalities, such as support for handling multiple accounts, a Unified Inbox feature, and a commitment to privacy protection (no tracking is conducted; connections are directly to email providers). 

Additional features include automatic background synchronization or push notifications, local and server-side search capabilities, and provision for OpenPGP email encryption via "OpenKeychain: Easy PGP."

For assistance with using K-9 Mail, users can engage with the support community in the dedicated forum at https://forum.k9mail.app. Those keen on contributing to the betterment of the application are invited to participate in this community-driven initiative. 

Opportunities exist for individuals interested in developing, designing, documenting, translating, troubleshooting bugs, or simply forming new friendships within the project's ecosystem. 

Access to the bug tracker, source code, and wiki can be found at https://github.com/thunderbird/thunderbird-android.

How to configure K-9 Mail for Android using IMAP

Open the K-9 Mail application.

Enter the email address you wish to use and its associated password.K-9 MailOnce done tap Next.

Tap IMAP.

K-9 Mail

Enter the required information for the Incoming Server settings:K-9 MailIMAP Server: This should be set to either mail.yourdomain or your Home Server name - edit it to whichever you are using.

Security: SSL/TLS

Port: 993

Username: The email address you are trying to connect to.

Authentication: Normal Password.

Password: The password of the email address.

Auto-detect IMAP namespace: Checked.

Tap Next.

Enter the required information for the outgoing server settings:K-9 MailSMTP Server: This should be set to either mail.yourdomain your Home Server name - usually the same as the Incoming server setting

Security: SSL/TLS

Port: 465

Require Sign-in: Checked

Username: The email address you are trying to connect to.

Authentication: Normal Password.

Password: The password of the email address.

Tap Next.

The majority of this screen can be left as is. You can adjust how often the app will check for new email in the poll frequency drop-down.K-9 Mail

Enter the required information:K-9 MailGive this account a name: Enter how you wish the K-9 app to refer to this email address.

Type your name: This will be shown to recipients of your emails.

Tap Done.

Your email account has been added. Clicking on the name we gave the account in step 7 will take you through to your inbox.

If you wish to view other folders, such as Outbox, Sent, Spam, etc you can do this by clicking on the K-9 icon in the top left.K-9 Mail

Show More
Information
  • Version8.0b4
  • UpdateOct 24, 2024
  • DeveloperMozilla Thunderbird
  • CategoryCommunication
  • Requires AndroidAndroid 5.0+
  • Downloads4M+
  • Package Namecom.fsck.k9
  • Signature2fdd0542b6d72a2f2e6be5f8dda0a252
  • Available on
  • ReportFlag as inappropriate
Old Versions
User Reviews
3.9 2 Reviews
5
4
3
2
1
  • Wayne Whittom
    Wayne Whittom

    Unhappy with the update. No context despite quick patch. All syncs from side panel. Not useful for updating single folders or long lists of folders. Update triggers by scrolling, makes simple tasks more complicated. Needs more efficiency and frustrating to figure out. Used to love the app, but now can't use it.

  • Franco “nextime” Lanza
    Franco “nextime” Lanza

    It gets the job done, but not really. Had the same problem as others with emails not automatically showing up. I used it for my work emails on my phone. Missed some important emails before realizing it wasn't updating. Checked all settings, found no issues. Switched to Blue Mail and it syncs perfectly now.

Security Status
Clean

It’s extremely likely that this software program is clean.

What does this mean?

We have scanned the file and URLs associated with this software program in more than 50 of the world's leading antivirus services; no possible threat has been detected.

  • Name: K-9 Mail
  • Package Name: com.fsck.k9
  • Signature: 2fdd0542b6d72a2f2e6be5f8dda0a252