POP/IMAP Setup on iOS (iPhone/iPad)
In Settings browse to Passwords & Accounts
Click Add Account
Choose Other then Add Mail Account
Enter your Name (display name), Email Address and Password and click Next
(Description can be used as an identifier for the account)
Enter the following details in the next screen for the Incoming Mail Server and Outgoing Mail Server
Incoming Mail Server
Host Name: mail.yourdomain.co.uk
Username: Mailbox Username
Password: Mailbox Password
Outgoing Mail Server
Host Name: mail.yourdomain.co.uk
Username: Mailbox Username
Password: Mailbox Password
Click Next