FLAWS and INCONVENIENCES Need Correction
It takes too long to pull down a box, when the options all USED TO appear automatically on the top line where you now have the useless "Sponsored" that does NOTHING in which I am interested.
Even using the pull-down box, I can't find a way to FORWARD.
Put back the SENDER in the first column. I know what I want to read by seeing who sent it. I DO NOT want to have to read a long line before getting all the way to the right side to see who sent the message.
WARN us when you're going to make major changes like this, and EXPLAIN what you're doing and how we need to adjust.
That's probably just the beginning. But I can't see one good thing about the changes you have made.