AltaMail supports virtually all email account types, IMAP, Exchange, EWS, POP3, Outlook, Gmail, Yahoo, Verizon, Comcast, iCloud, BTInternet, PEC and many more.
It has a set up wizard that will help you with all the details of your account. Simply enter your email address and password (if needed) and the set up wizard will do the rest. Use the "Manual" button to create an account with your own settings.

To create a new email account, tap on the 3 line button in the top left of the screen to show the left side panel.
Tap on the "Accounts" button near the bottom of the side panel.
Tap on the "+" button beside the Accounts button to add an account.

To edit accounts, tap on the "Accounts" button in the left side panel and then tap on the cog settings button beside an account.

You can delete accounts by editing an account, scroll down to the bottom of the edit screen and then tap on "Delete Account"

More than 1 email accounts will require an active upgrade subscription.