See also Using Zimbra with Apple iOS Devices (ActiveSync)

The ActiveSync configuration is generally preferred.

This procedure will configure secure connections.

IMAP will NOT sync:

• Contacts
• Calendars
• Tasks

https://support.apple.com/en-us/HT201320

This was done using iOS 8.1.3

On your iOS device, add a new IMAP account for the Zimbra server.

1. Tap Settings
   
   
   
2. Scroll down, tap Mail, Contacts, Calendars
   
   
   
3. Tap Add Account
   
   
4. Tap Other
   
   
   
5. Tap Add Mail Account
   
   
   
6. Enter your Name, Email address, Password and a Description and tap Next
   
   
   
7. Leave IMAP selected
   
   
8. Under INCOMING MAIL SERVER Enter Host Name “zimbra.virtualarchitects.com”
   
   
9. Use your full email address as username
   
   
10. Enter your password
    
    
11. Under OUTGOING MAIL SERVER Enter Host Name “zimbra.virtualarchitects.com”
    
    
12. Use your full email address as username
    
    
13. Tap Next
    
    
14. Tap Save