Email setup on the iPhone or iPod Touch

Tap Settings
Tap Mail, Contacts, Calendars

Add Mail Account

Choose Other

New Account Information

Enter your Name
Enter your email address as the Address
Enter the password for your email address
Tap Next

Host Name: This is typically your domain name preceded by “mail.”. This can be found in the E-mail Accounts section of the cPanel, under More > Configure Mail Client.
User Name: Your email address.
Password: The password for your email address.
Outgoing Mail Server

Host Name: This is the same as the incoming server.
User Name: This is required and again is your email address.
Password: The password for your email address.
Tap Next.
Cannot Verify Server Identity
This error message it is due to the SSL certificate being used for the mail server is *.BlueHost.com. To use the SSL Certificate simply click Continue.

How to store Sent, Drafts and Trash on the server
To do this please go to Settings > Mail, Contacts, Calendars
Choose your email account
Tap Advanced

Under Mailbox Behaviors choose the mailbox you wish to configure.

Choose the corresponding folder on the server you wish to save the email in.

Repeat the above steps for any other folders you wish to store on the server.