When are Sieve filters usually applied to an email?
When are Sieve filters usually applied to an email?
Sieve filters are typically applied when the email is delivered to a mailbox. Sieve is a language used for email filtering at the time of final message delivery and is designed to run on the mail server after the email has been accepted by the local server but before it is delivered to the recipient's mailbox.
A is correct https://www.linux-magazin.de/ausgaben/2007/06/ausgesiebt/