An applicant is some who applies to join our forum after consenting to several conditions as determined by checking boxes (covering such things as the site licensing). This application is then subject to review by site a moderator. See ☰ ▸ Review ▸ Pending.
On our forum, those with an institutional email address get waved thru and those with a private email address (invariably gmail) get a separate email asking what their interest in the forum is (open energy system modeling as it happens, see here with about 1400 subscribers).
Those that are rejected end up with Status = Rejected. But their application details remain: real name (not confirmed), institution (optional), and email address (verified via the screening process, presuming they do reply). HTH.