5.2.2 Actions Described

An action is a Sieve command that performs some operation over the message. Actions do the main job in any Sieve program. Syntactically, an action is a command terminated with semicolon, e.g.:

keep; fileinto "mbox";

GNU Sieve provides the full set of actions described in RFC 3028. It also allows to extend this set using loadable actions. See section 5.7 Actions, for detailed discussion of actions.