I was happy for 10 whole seconds as got my "Send" button back per you!, M!!
Then, tried sending msg to myself....No go.
Cannot show screenshots here I think, so here's some of info shown:
( Guess it all boils down to getting my correct
STMP info from ATT (?)
_________
(below are quotes)
Outgoing mail server (SMTP) - (indicated "None")
Use only this server - (box was checked)
The server error encountered was: The server “POP3” cannot be contacted on port 995.
The connection to the server “smtp.att.yahoo.com” on port 995 timed out.
Cannot send message using the server smtp.att.yahoo.com
Select a different outgoing mail server from the list below or click Try Later to leave the message in your Outbox until it can be delivered....

I tried. Maybe port # wrong. Guess I have to call AT&T for info ??