There ought to be an emoticon for whacking oneself upside the head. Obviously the report is immediately updated or I wouldn't have been able to test it out.
Personally I wouldn't want t-mails as I'm not a trader/seller. But from the other thread, it appears sellers wouldn't mind "T-mail for current status".
One possibiity would be that users have a checkbox on their home list that shows that they want T-mails regardless of status. All their plants would have the T-mail message (if the plant was just listed as "have") and the rest of us would show "unavailable" until we changed the status.
Would that cover all the bases?