Syncing your contacts with your iOS device's address book
The cardDav protocol allows you to sync your mail.com contacts with
the contacts app on your iPhone, i.e. any changes made on your iPhone will be available on
mail.com and vice versa.
On your home screen, open Settings.
Tap on Contacts.
Tap on Accounts.
Tap on Add Account.
Tap on Other.
Tap on Add CardDAV Account.
Enter the server address carddav.mail.com in the
Server field.
Enter your mail.com email address in the Username field and your mail.com password in the Password field.
Tap on Next.
Tap on Save.
Your mail.com contact list will now sync with your iPhone contacts.