Erase this person
Clears their name, company, email and phone from every visit, the address each
visit was signed in from, the pre-registration their host made for them, and the invitation and
arrival emails in the mail log. The dates and durations stay, so your figures do not change.
Kept: the purpose written on each visit, and an entry about them on the barred-person watchlist, because the visit record is the site's own and the watchlist is a safety list you keep on purpose.