Basically, a temporary gmail or disposable email address allows you to sign up for a website, app or online service without entering your personal information, so you're not going to have to deal with constant junk mail. These forms of email addresses are created and personalized for a particular reason and you can delete or discard them until this reason is completed, which does not impact your personal mail inbox, ensuring that you can continue to receive daily emails that are not mixed with spam messages or junk mail.