Does 1PW's Have I been pwned integration only check against the 1PW master email address?

Hey mark24332:

Great question! Watchtower's Compromised Website warnings are based on Login items that you have in your 1Password account (checked locally against your device). Running a Breach Report on 1Password.com will instead check your account email against Have I Been Pwned for accounts that may not currently be stored in your 1Password account at the moment.

In your situation, if you have an item in 1Password using name+abc@email.com or differentname@email.com, while accounts using those email addresses wouldn't show up in a Breach Report generated on 1Password.com, they would show up on the Login items themselves.

Let me know if that clarifies it for you, or if you still have questions!

Jack