Did Yahoo send a "Need help getting back to your mail account?" email?
Yes we did.
When you get an email from Yahoo in Yahoo Mail, you'll see an icon next to the message to confirm that we actually sent it.
However, the icon doesn't appear for emails we send in non-Yahoo Mail accounts.
If you've recently received an email with the Subject: "Need help getting back to your mail account?", and starting with, "We noticed you haven't logged into your Yahoo Mail in a while...", that was us making sure you're still able to access your Yahoo Mail account.
Sample email you would have received