IMAP is a protocol which allows user to access their online mail accounts remotely and allows said email to stay on the server.
Click Login Information and fill it with your corresponding email and password credentials. Provide an input on the following information in the required field - Login with security: Security Sockets Layer (SSL)
Select Test Account Options and you are good to go!
Sky Email Settings for iPhone
Before we start our guide for iPhone, you should first know what iOS your iPhone is operating with since different a different iOS has a different guide.