I am still using "old" Yahoo mail because I find "new" mail to be completely and utterly intolerable. The design is horrendously awful. (I am an architect and I have a good eye for design.)

Having said that, I have had a signature for years that includes a small jpg logo of my firm. I needed to edit this signature and found that my logo just disappeared! I am told (by you) that this logo is no longer a supported service.

SO ... Yahoo changed my service and did not inform me of this !!! How rude. I have my own webmail (which I have increasingly been using instead of Yahoo) but I still wanted my Yahoo mail to have my professional logo. I pay monthy for Yahoo Pro .. and for WHAT, exactly? Your "pro" service is virtually useless, especially since I am constantly getting messages about my storage limit -- which used to be "unlimited". .... Yet another service feature that has been eliminated.

At this point, Yahoo is only good for me to communicate casually with friends and family. There is no "pro". But there is also phone messaging and WhatsApp for this. So then what is Yahoo mail actually good for these days?

I'll leave that for you to answer.