Activity window on send

I do not see any window showing progress when sending an mail. Even with the option to show this no window shows up.

Is this a bug or a different setting? Other email programs show this and it’s nice to see that it’s sent without looking in the sent mail. I suppose there is an error message if it doesn’t work but I have not had that happen either.

this window appears only when you click on the “Send and Receive” button. If you only send an email, this window will not appear and the sending progress will show in the bottom of the window as progress bar.