Https://leakcheck.io/ - Payed, But you get passwords in clear text and there's a cheap 1 time payment option! Source: about 1 year ago

Sharing is caring, so I'll share one of mines. I tend to use google dorking as usual, but also use LeakCheck which is a rather handy tool to receive clear text passwords from Usernames, Email Addresses and such. Are there any other places, like these, that can be of use? :). Source: over 1 year ago

You could try https://leakcheck.net/ or https://www.dehashed.com/ (personally best for me) but they are paid unfortunately. Source: over 2 years ago

There was a data breach last year. Check on https://leakcheck.net/ whether your details were on there. Source: over 2 years ago

I think https://leakcheck.net/ might be the one you're looking for. For personal emails I use hacknotice.com. Source: about 3 years ago

I used these tools in the past: https://mxtoolbox.com/ https://www.mail-tester.com/. - Source: Hacker News / about 2 months ago

Suprised to not see https://mxtoolbox.com in this list too. - Source: Hacker News / 6 months ago

MX Toolbox - https://mxtoolbox.com/ - may be a place to start digging. Source: 7 months ago

You can try https://mxtoolbox.com/. Source: 7 months ago

The url I want is https://mxtoolbox.com/ and the https://mxtoolbox.org/ one redirects to malware. Source: 7 months ago