Removed internet account keeps popping up
Some time ago, I removed an internet account from my MacBook (System preferences) and from my Mail app. Still, my Mac keeps asking me for the password of that non-exiosting account, via a pop-up. Somewhere, something must have remained ion my system, but I can not find what and where, of how to get rid of it. Maybe someone knows? Thanks!
MacBook Pro 13″, 14.4