Annotating Spam control
To delete spam (Unixism rm spam) is a and . This is an exception to advice to as a strategy. While some advise to , a lot of s detect spam and add more wherever it has managed to remain undeleted, and it becomes impossible to of s meaningfully if there's a version consisting mostly or only of spam in between two s.
It isn't usually a good plan to delete spam irrecoverably as spam filters are imperfect. Using a bulk folder that expires questionable mail and allows users to look at it at their leisure (or not) is an .
Where spam versions only exist, s entirely if possible. Always to pre-spam versions rather than simply remove the spam content, as it may have replaced realtext. Do not under any circumstances edit the version whilerestoring the pre-spam version. Do any editing in another edit.