iOS 12.x (iPhone, iPad) Email Account Settings for IMAP

This article applies to recent versions of Apple iOS. View articles for Apple iOS 11.x and earlier.
 
Here are our instructions for setting up your email account on your Apple iPhone. These instructions apply to iOS 12.1.x. 
  1. Go to Settings.
  2. Select Passwords & Accounts.
  3. Select Add Account.
  4. Select Other.
  5. Select Add Mail Account.
  6. Enter your Name in the Name field. (ex: John Smith)
  7. Enter your E-mail Address in the Email field. (ex: john@company.com)
  8. Enter your Password in the Password field.
  9. Enter any kind of description you want in the Description field. (most people will simply enter their e-mail address or use something like "Work" or "Personal" or "Company Name").
  10. Press the Next button.
  11. Press the IMAP tab.
  12. Your Name, Email and Description should already be filled out.
  13. Enter mail.atlantisnet.com as the Incoming Mail Server Host Name.
  14. Enter your E-mail address as the Incoming Mail Server User Name. (ex: john@company.com)
  15. The Incoming Mail Server Password field should already be filled out.
  16. Enter mail.atlantisnet.com as the Outgoing Mail Server Host Name.
  17. Enter your E-mail address as the Outgoing Mail Server User Name. (ex: john@company.com)
  18. Enter your Password in the Outgoing Mail Server Password field.
  19. Press the Next button.
  20. iOS will now verify your settings which could take up to 1minute.
  21. At the very least, you must enable Mail for synchronization.
  22. Press the Save button.