Most email service providers offer account recovery options such as resetting passwords or answering security questions. Look for these options on the sign-in page of your email service provider's website and follow the prompts provided.

If you're using an Android (or an iPhone with Chrome), you can view your Google password and other saved passwords in Password Manager. On an iPhone, you'll usually find your Google password in Settings > Passwords.

Simply open your browser. And type the person's name + email address. You can also try the following queries: “Firstname lastname” + “@gmail.com”