Thank you for answering my request, Matt, but I cannot send my response via email. So I am copying and pasting what I tried to respond to Matt. Hopefully he can still access my original message if it is needed. Hi Matt, Thank you for the prompt reply. Unfortunately F10 did nothing when I pressed on it with the cursor in the compose area. No menu bar came up. Nothing changed. Yes, I guess I did disable the composition toolbar unintentionally as I did R click on the 2 choices (menu bar and composition toolbar) and it made them both go away and no options came up, with nothing left behind in that 'sent' area. (In response to you, it did go 'send later' in gray first and there had been some spotty internet access then but internet did resume fine, but the 'send later' stayed gray, but then disappeared as above.) The email addresses I was using were all current operational addresses. So I need to get composition toolbar option back up, so I can respond to and send out emails. This is a major problem. I now have no way of responding to emails. Thanks once again, Mary On 21/03/2026 3:35 a.m., Mozilla Support Forum wrote: > Mozilla Support > It no longer shows a 'sent' option at the top left corner when I am replying. I deleted it by mistake and I need it back > Matt > Mar 21, 2026, 4:35:00 AM > > If the send icon turned grey your computer was not connected to the internet, or you had placed Thunderbird in offline mode (but in that those cases it should change to send later not just go grey) SO just grey usually means that the email address entered in the to is simply not valid. Often there is a space before or after the entry or you have used an address book entry that does not actually have an email address. > > I guess you have somehow managed to disable the composition toolbar by right clicking on the toolbar or menu. If you have neither of those toolbar to right click on press the F10 key in the compose window to make a menu bar visible to right click on >