Is this on your computer or on your email?
Which email please?
Okay since you have removed it you should no longer see it anymore.
Lastly go to your Gmail account and you’ll see the Boxbe “Inbox" list is still there . Delete the Boxbe label by right clicking on the folder and click on Remove Label.
Please RATE 4 stars or above so that I may close the ticket. Thank you and have a great weekend.