2fa means BOTH factors are needed. the situation you are discussing here is not password and email but password or email. either one would work.
i have seen services that send a token to your email every time you log in or when you log in on a new device or when you haven't logged in in a long time. that would indeed be a form of 2FA. but these services also allow you to reset the password through email, so it's not exactly 2FA all the time like most other 2FA setups.
i have seen services that send a token to your email every time you log in or when you log in on a new device or when you haven't logged in in a long time. that would indeed be a form of 2FA. but these services also allow you to reset the password through email, so it's not exactly 2FA all the time like most other 2FA setups.