I use a Yahoo email account almost exclusively for my shops, and have for years. A few shop offers go to Spam, so I try to remember to check it once a week or so, weed out and send any to my Inbox. Expert Solutions and Cori prior, have always had a warning against Yahoo, yet their email has always been delivered without problem.
I have other email accounts for different purposes, one of which is Gmail. Not long ago, my Yahoo and Gmail accounts were hacked. My computers have always been scheduled to automatically scan for viruses, but it happened nevertheless. No items were ever found or even quarantined. Was a pain in the neck. I changed passwords to both accounts, not once but twice over a month or so.