How to sent mail from emacs?
I found this
There are two ways to send the message. C-c C-s (mail-send) sends the message and marks the mail buffer unmodified, but leaves that buffer selected so that you can modify the message (perhaps with new recipients) and send it again. C-c C-c (mail-send-and-exit) sends and then deletes the window or switches to another buffer
But both ( ctrl+c ctrl+s ) and (ctrl-c crtl+c) are not working