I keep getting messages to whitelist and I've tried but need better instructions.
Please post better instructions on how to whitelist yahoo. Also explain effects this might have.

Hi there,
The instructions depend on the software you maybe using. We have tried to capture the steps for the most frequently used programs here:
https://en-global.help.yahoo.com/kb/new-mail-for-desktop/sln28635.html
Note if you are using Firefox, you can follow the steps under the heading “Turn off Tracking Protection for individual sites” on the following page:
https://support.mozilla.org/en-US/kb/tracking-protection?redirectlocale=en-US&redirectslug=tracking-protection-pbm#w_how-to-turn-tracking-protection-off
We have seen issues where users using Ad Blockers have not been able to see the latest email in their inbox due to the ad blocking software incorrectly blocking it. Whitelisting Yahoo Mail should eliminate issues like this.
Of course it will also mean that ads will not be blocked, but its not cheap to provide 1TB of email storage for free for everyone, so we need to pay the bills somehow!
Thanks,
Mail Support