Updated FAQ

FAQ.md

@@ -2563,6 +2563,17 @@ Note that *regex* should be disable and that there should be no white space.
 
 Please be aware that a difference in the *from* and *reply-to* domain, and no or multi *from* addresses isn't a good indication of spam.
 
+Since the app sets the keyword *$Filtered$* after the rules have been executed for a message,
+you can create a rule to prevent the rules from being executed again (which is sometimes desirable):
+
+* Name: anything you like
+* Order: lower than all other rules, for example 0
+* Stop processing rules after executing this rule: enabled
+* Header contains: *$$Filtered$* (no spaces)
+* Action: No action
+
+Note that not all email servers support IMAP keywords.
+
 <br />
 
 The automation action will broadcast the intent *eu.faircode.email.AUTOMATION* with the following string extras: