I think my Steam account is my oldest account that I still actively use as it has a registration date in 2003. Gmail probably the runner-up but that debuted in

I think my Steam account is my oldest account that I still actively use as it has a registration date in 2003. Gmail probably the runner-up but that debuted in 2004. To that effect, my Steam username is an email address where the domain long expired and is no accessible by me.