I use Thunderbird to manage seven email accounts. For six of those seven accounts, when I compose a message, the available menu categories in the "Write" window are File|Edit|View|Insert|Format|Options|Tools|Help. But for one - and ONLY one - of the seven accounts, the available menu categories in the "Write" window are File|Edit|View|Options|Tools|Help. That is, the "Insert" and "Format" menu options are missing. (image attached) In addition, on the "Write" window of that one account, the toolbar that allows changes to paragraph format, font, background color, font size (image attached) is also missing. I can find no way to bring either of those items back to the Write window of that one account. Nothing in the "View" menu helps, and I can't edit a toolbar in a way that restores either of the items. Most confoundingly, this is an issue in one and only one of the seven email accounts I manage with Thunderbird. My guess is some form of corruption is at fault, but I don't know how to troubleshoot the matter. Any ideas?