Os administradores do fórum podem acessar os endereços de e-mail dos usuários do fórum?

[vrms (Gunnar)]

can admins of a forum download a list (csv i.e.) of forum members [username, name, email address]?

if so, what do you get when people log in via github, or google?

[pfaffman (Jay Pfaffman)]

Yes.
You get whatever email address that the social login reported.