I go to inbox in thunderbird, click on a message, then click on reply. I get only a window with at the top only email status info: to, from, subject and below that, space to compose my reply but no button anywhere to send my reply or attach a document to it. No mail toolbar with send or attach buttons. In view dropdown in menu bar back at inbox, both menu bar and mail bar are checked. I've tried on view dropdown to customize and change to default settings, did not work. To reset Thunderbird completely, I read to push shift and to click on Thunderbird icon, but where do I find that icon? Many other people seem to have this problem. This all happened out of the blue; I've used Thunderbird for a couple of years successfully.