SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

Hi, If I want to get e. g. email from session, I should use:
const { email } = session.getAccessTokenPayload();
or 
const accessTokenPayload = session.getAccessTokenPayload();
    const { email } = accessTokenPayload.customClaim; 
?

The other way is to use ThirdpartyEmailPassword.getUserById function

So both ways are ok and there's your one is too?