Theis procedure walks through configuring an iPhone for synchronization with your SureMail mailbox via Exhange ActiveSync.
ActiveSync will wirelessly synchronize your mail folders, your contacts and your calendar with your iPhone.
Note that only one ActiveSync acount can be set up on each device.
On the IPhone, choose Settings, and then choose Mail, Contacts, Calendars.
Choose Add Account.
Choose type Microsoft Exchange.

On the next screen, enter your email address, and then your UPN Login ID. This is the login ID that looks like an email address (with an "@" sign). This is the same ID that you would use to log into Outlook or Outlook Web Access.

The Description field is arbitrary and can be left as is. After filling out the information, tap Next.
Note: If you have a wildcard set up in your DNS settings, you may see anerror. This isn't a problem, just tap Accept and you won't see the error again.
A new field for Server will pop up on the screen. For this, enter mail.thoughtbus.com, and tap Next.

The iphone will verfy your account information and if everything has been set up correctly, you'll see this screen:

To ensure that your email, calendar and contact information will be synchronized with the Mail, Contact and Calendar app on the iPhone, make sure all the sliders are set to On and hit Save.
5.
For additional options such as how ar back to synchronize calendar events, and how many recent emails to display, go back to Settings Mail, Contacts, Calendar.