So, you've signed up for Rackspace email and you would like to set up the account on your iPhone or iPad. Here's how to do it in iOS8. The screenshots show the setup on the iPhone. The iPad will look different but the basic steps are the same.
1 – Add the account.
Tap Settings.
Scroll down to Mail, Contacts, Calendars then Add Account > Other > Add Mail Account.
Enter the following information in the spaces provided:
Name – Your first and last name. This is what will appear in the From field of emails you send.
Address – Your entire email address (type carefully as a mistake will result in failure).
Password – The password for your email account (type carefully).
Description – A name for the account (e.g., Mydomain, or Work). This will be visible only to you.
Tap Next.
2 – Server settings.
Under both the INCOMING MAIL SERVER and OUTGOING MAIL SERVER sections, enter the following:
Host Name – secure.emailsrvr.com (type carefully).
User Name – Your entire email address (type carefully).
Password – The password for your email account if it is not already filled in (type carefully).
Tap Next and the device will verify settings.
Tap Save.
3 – Map the folders.
Tap Settings > Mail, Contacts, Calendars. Select your account, scroll down, and tap Advanced.
Under Mailbox Behaviors, tap Drafts Mailbox.
Under ON THE SERVER, tap Drafts.
Tap < Advanced and tap Sent Mailbox.
Under ON THE SERVER, tap Sent.
Tap < Advanced and tap Deleted Mailbox.
Under ON THE SERVER, tap Trash.
Tap < Advanced, < Account and Done.
Open Mail, and enjoy!