How To Configure Email ID on Apple iPhone (iOS 11 / 12)
Step 01: Go to Settings on iPhone and tap on Accounts & Passwords.
Step 02: Select Add account.
Step 03: Select the account type as Other.
Step 04: Select the Add Mail Account option.
Step 05: Enter the account details Name, Email, Password, and Description. Then click on the Next button.
Step 06: Select the account type as IMAP.
Step 07: Enter the email server settings (Incoming & Outgoing) and then click on Next.
Step 08: Click on the Save button.
Step 09: Select the account which is added.
Step 10: Select the Account option.
Step 11: Select the Advanced option.
Step 12: Select the below folders where your email will be saved.
Step 13: Scroll down and enter the INBOX as IMAP path prefix, all in capital letter.
Step 14: Your email account is set up properly. Now close the application and after that please Switch Off the iPhone and Restart it in order to activate the settings.