This question already has an answer here:
Sendmail supports a feature called 'plussed users'. Once enabled, emails sent to
are automatically delivered just like mails to
firstname.lastname@example.org. There is no need to register or set up these 'plus suffixes'. The user can just use them and set up client-side filtering rules on his own.
Does Exchange support a similar mechanism? If so, how to enable it?
Note that I don't want answers about other means of filtering, e.g. spam/junk filtering, server-side or client-side rules, email aliases/addresses that are configured explicitly and so on.