Firefox is my default browser. I am sure that I have literally dozens of site logins that use my primary email address as the ID or as a recovery email (including Firefox itself). I now want to use a different email address (gmail or something more generic), since there's a slight possibility that my current email provider may not exist in the future. Is there a way to get Firefox to give me a complete list of all website logins that use this specific email address? (I don't care about passwords, I just need to know which sites I have to change.)