Apple® Device Settings
Settings for Apple® devices (iPad®, iPhone® etc) are essentially the same as for other devices.
Details instructions are available at Apple.com.
Ensure your Apple® device deletes mail from the server unless you have a PC or laptop that does this.
Failure to do so will cause your mailbox to become full, and email will be rejected.
To ensure email is removed from the server;
iPhone®
Select Settings, Mail Contacts Calendar, your account, Advanced, Delete from server, the option required.
iPad®
Select Settings, mail, select your account, select your account again, advanced, deleted mailbox, on ipad trash and server trash