YOU SAID: The move to the new Yahoo Mail desktop experience cannot be undone, and there is no option to switch back.

THAT IS NOT A VALID ANSWER. IF YOUR PROGRAM WAS DESIGNED TO FORCE ME TO SWITCH, THEN YOUR PROGRAM CAN ALSO ALLOW ME TO SWITCH BACK TO THE OLD YAHOO EMAIL. I THINK THAT YOUR PROGRAMMERS SHOULD BE ABLE TO FIGURE THAT OUT.

THIS IS A SIMPLE PROGRAMMING OPTION.

IT IS UNETHICAL TO FORCE THIS UPDATE FOR ALL YAHOO EMAIL USERS, WITHOUT WARNING, WHETHER THEY WANT TO SWITCH OR NOT.

I HIT A "BACK ARROW" BUTTON THAT WAS NOT LABELED "THIS ACTION WILL SWITCH YOU FROM THE OLD YAHOO EMAIL TO THE NEW YAHOO EMAIL". IF THIS ACTION WOULD HAVE BEEN LABELED, THEN I WOULD NOT HAVE HIT THE "BACK ARROW" BUTTON.

THIS IS UNETHICAL TO PROGRAM A "BACK ARROW" BUTTON TO TAKE AN ACTION THAT YOU HAVE NOT DESCRIBED AND TO MAKE THAT CHANGE PERMANENT.

I ALWAYS THOUGHT THAT YAHOO WAS AN ETHICAL, HIGH QUALITY ORGANIZATION THAT PROVIDED HIGH QUALITY EMAIL SERVICES. YOU HAVE RUINED YOUR REPUTATION WITH ME.

I HATE THE NEW YAHOO EMAIL!! SWITCH ME BACK ASAP!!