Role attribute for user email? - Mailing list pgsql-general

Hi,

Is there a way to create new attributes for a login role, like an "email
attribute"?

I have to keep a few informations on all the users that connect to the
PG server, and their attributes list looks like an elegant place to
store these informations. But I cannot find a way to add new
attributes... Is that possible?

Thanks,

Philippe Lang