How to set new email accounts in OS 10.13.6

FBRay Said:

"How to set new email accounts in OS 10.13.6 How to set up new email accounts in Google, AT&T, and iCloud"

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Using an App Password:

Depending on the App (i.e. Mail), you may need an App Password

Sites for the above: Google, AT&T, and iCloud

• Gmail: Sign in with App Passwords - Google Account Help
• AT&T: Create a secure mail key - Email Support
• iCloud: Using App-Specific Passwords - Apple Support

Mail User Guide - Adding new mail accounts.