Before we start 

We should check if the username and passwords are correct by going to www.youourdomain/webmail 

Try the username : full email and password that you have on file.

Newer Versions of iPhone

In the directions below, wherever it says "yourdomain.com" substitute with your domain name.

1. Tap "Settings" app

1. Tap "Mail, Contacts, Calendars"
2. Tap "Add Account..."
3. Tap "Other" (bottom option)

1. Tap "Add Mail Account"

1. Enter Name, address (full email user@yourdomain.com), and password.
   (iPhone will attempt to guess your settings. Allow ~1 minute for it to fail.)
2. Select IMAP.
   (It's the default. The option you've selected will be highlighted blue.)

1. Under "Incoming mail server"
   1. Set "hostname" to mail.yourdomain.com 
      (or your server host name or server's IP address)
   2. Set "username" to email@yourdomain.com
   3. Set "password" to your password
2. Under "Outgoing mail server"
   1. Set "Host name" to mail.yourdomain.com 
      (or your server host name or server's IP address)
   2. Set "User name" to email@yourdomain.com
   3. Set password to your password

You are now ready to send and receive emails via your iPhone.

Older Versions of iPhone

Although most email settings are identical, the iPhone requires a special setting for the incoming and outgoing mail servers. Instead of using the defaults that are typically used in the email settings replace mail.yourdomain.com with yourservername.com

If you aren't sure of the name of your server you can usually find it in the Stats on the left hand side of your cPanel.
If you don't see it immediately, you can also try pressing CTRL+F and typing in "server name" and pressing enter.
This should highlight and take you to the correct area. 

1. Press the Home button and select Settings > Mail, Contacts, Calendars.
2. Under Accounts, select Add Account...
3. Select Other.
4. Enter your name (which will show in the from field) and your full email address.
5. Enter your email password and description (we recommend the full email address as your description).
6. Press Save.
7. Select IMAP or POP 
8. Under Incoming Mail Server, enter yourservername.yourdomain.com as the Host Name.
9. You can get your servername by loging into your cpanel. Then go to email > Configure Email 
10. If this doesn't work try using your server's IP address. VPS and Dedicated use your server's IP address.)
11. Enter the full email address as your User Name.
12. Enter your email password and then scroll down.
13. Enter the same information under Outgoing Mail Server.
14. Press Save.

You are now ready to send and receive emails via your iPhone.