Which table contains the email addresses for users who log in to the Supplier Portal?

Summary:

Dear Experts,
I would like to obtain the email addresses of users who log in to the Supplier Portal using SQL.
However, I could not identify the correct table to reference.
I checked the PER_EMAIL_ADDRESSES table, but it does not appear to contain the email addresses for users logging in to the Supplier Portal.
Could you please advise which table I should refer to?