Configuring a POP email account in El Capitan Mail
The ability to manually configure an email account in Mail in El Capitan has been changed from difficult to almost impossible, but it still can be done.
Start by adding a new Account and use the Other account button.
- If in Internet Accounts, choose Add Other Account, then Mail Account.
- If in Mail, choose Other Mail Account, then Continue
For the username and password, just enter random characters for both (username must be in <chars>@<chars> format).
You will then have a screen where you can set the Account type and the incoming and outgoing servers.
Fill in the correct details for your account.