I use Linux OS and Thunderbird mail client so that I can access my personal gmail and work/university email, all through the same interface.
I had accidentally put email of a wrong recipient (a university employee) when sending an email using Thunderbird (message origin was from my gmail). As soon as I hit the "send" button on Thunderbird, I realized the email to which I actually wanted to send the email was not correct. And so, to stop the email from being sent, I unplugged the power cable from the electric outlet. And, my laptop has got no battery. I am worried if my email has actually got delivered to the wrong person. I checked the "sent" folder of gmail on Thunderbird. It is not there. Relief! I have also checked after signing-in to the gmail through web browser. Even there I cannot see that mail in the "sent" folder. I guess the email did not went through; Thunderbird takes some time to deliver, right? Am I safe? Could it be possible that the email has actually made it to the wrong person but it is not showing in my sent folder?