K-9 Mail

1. If you still do not have K-9 Mail, you can obtain it from Google Play. To do that, please ensure that your device is connected to the Internet. 

If you have a QR code reader installed, you can find K-9 Mail by scanning this code: 

Once you have the application installed, have it started.

2. Enter your email address username@example.com and its current password. Click Next.

3. Choose IMAP.

4. Specify the following details:

Username: username@example.com (replace username@example.com with your email address)
Password: Enter the current password for the mailbox
IMAP server: mail.your_server.com (replace your_server.com with the server's hostname)
Security type: Choose SSL/TLS (always)
Authentication type: Leave the default option selected (PLAIN)
Port: Enter 993
Auto-detect IMAP namespace: Uncheck this option 
IMAP path prefix: Enter INBOX (capital letters)
Use compression on network: Leave the default options selected

Press Next.

5. К-9 Mail will verify your settings; active Internet connection is required. 

6. On the screen that follows, specify the following details:

SMTP server: mail.your_server.com (replace your_server.com with the server's hostname).
Security type: STARTTLS (always)
Port: Leave the default option (587)
Require sign-in: Mark this setting
Authentication type: Leave the default setting selected (AUTOMATIC)
Username: username@example.com (replace username@example.com with your e-mail address)
Password: The password of your mailbox is specified here automatically

7. On this step, you need to specify the following:

Folder poll frequency: Leave the default setting selected (Never)
Enable push mail for this account: Mark this option.

You need to configure the following three options according to your preferences. 
Press Next.

8. This is the last step for configuring K-9 Mail.

Give this account a name (optional): You can write a short description of your account in your e-mail client. This name would show up only in your own mail program. You can set a name such as "Work Account", "Sales mail" or your name for example.

Type your name (displays on outgoing messages): You should enter the name, which you would like to appear on the messages you send.

Click Done.