Navigate to Account Settings > Email Settings:

Yahoo Settings: Yahoo requires this setting to be turned on, in order to sync their email accounts with outside applications:

  1. Go to https://login.yahoo.com/account/security
  2. Scroll down until you see "Allow apps that use less secure sign in"
  3. Turn on "Allow apps that use less secure sign in": 

If your Account Security page is different from the one above, you may have a Yahoo Business account, in which case you'd need to create an "App password" for 17hats by following this guide: https://help.yahoo.com/kb/new-mail-for-desktop/generate-third-party-passwords-sln15241.html

Incoming

Use the dropdown to select "Yahoo" and connect your email

Outgoing

Select "Other" from the dropdown and enter these settings, along with your email account's username/password:

Server: smtp.mail.yahoo.com
Port:
465
SSL:
Yes

OR

Server: smtp.mail.yahoo.com
Port:
587
SSL:
Yes

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