BELOW WE MAY GET STEP-BY-STEP SCREENSHOTS,

Step 1 - Click on "Email Account" drop-down button then click on "Configure Mail Client" option. 

Step 2 - Note down address of Incoming Server and Outgoing Server e.g. "mail.s        z.com".

Step 3 - Tap on "Settings" icon.

Step 4 - Tap on "Accounts & Passwords" option.

Step 5 - Tap on "Add Account" option.

Step 6 - Tap on "Other" option.

Step 7 - Under Mail category, tap on "Add Mail Account" option.

Step 8 - Type relevant Information and credential, tap on "Next" option.

Step 9 - Keep it IMAP untouched, scroll down.

Step 10 - Type relevant Host Name for INCOMING MAIL SERVER and OUTGOING MAIL SERVER e.g. "mail.s        z.com", type credential and tap on "Next" option.

Step 11 - Please wait for a while.

Step 12 - Tap on "Save" option.

Step 13 - Verify newly added "S        Z" account under Accounts category and press Home button.

Step 14 - Tap on "Mail" icon.

Step 15 - Tap on "S        Z" account from the list.

Step 16 - Verify and read your recent emails successfully.