A website that shows you all the accounts you made connected your email.

1

have i been pwned?

Maybe this one? Pwned Its for leaked databases where you can check your email adress if its included.

#Data Breach #Security & Privacy #Cyber Security 3670 social mentions

2

Mine

I think the site you are looking for is Mine.

#Security & Privacy #Governance, Risk And Compliance #Data Privacy 43 social mentions

3

Namechk

#Domain Names #Web App #Name Checker 43 social mentions