Yahoo confirms it's blocking email access if you use an ad-blocker

Yahoo Mail

While an in-browser ad-blocker is generally recommended to prevent malware, as well as to make certain websites less annoying, Yahoo has begun testing a new feature that could end up blocking you from your Yahoo Mail account if you use an ad-blocker.

Last week, users began reporting they were being blocked from accessing their Yahoo email inbox for using an ad-blocker without warning.