Scroll down to the Incoming Settings section and verify that you are using the settings below: Use SSL: On. Tap Advanced to review the Incoming Mail Server settings. Reply to the post with updated status of the issue to assist you further. If the display tells you that your Exchange email account has been set up, go to step 10. For additional information on how to reconfigure your account again in your iPhone device to refresh the syncing of your email to your phone follow the below link: Hope this information helps.

Tap Description and key in the required name. If you try to send an email without giving your username and password, the mail server can’t tell that you have an account on the server – and if it lets anyone without an account send email through the server, spammers would misuse the server and send junk mail. Go to Settings > Passwords & Accounts and tap your email account to see the account information, such as the incoming and outgoing mail servers. Tap Password and key in the password for your email account. That means that you must give the outgoing server settings the same username and password that you used for the incoming server settings: by default, iPhones don’t insist on taking a username and password on the settings for sending email, but you must use them anyway. Select the type of Hotmail data you want available on your iPhone 7 or iPhone 7 Plus. Type in your Hotmail email address and password.

You MUST enable SMTP authentication before you can send email. Browse and select on Mail, Contacts, Calendars.

Hotmail server settings for iphone 6