1. From the menu bar in Mail, choose Mail -> Add Account. 
  2. Select Other Mail Account from the list, then click Continue.
  3. Enter your email, password, username (same as the email). 
  4. Use the following settings:
    1. Incoming mail: Server imap.hostinger.co.uk 
    2. Outgoing mail: Server smtp.hostinger.co.uk 
  5. Press continue and follow the on-screen instructions.

 

Apple Mail will now sync with your Sprint Online email account.