I'm using "Pigeonhole Sieve Interpreter" in dovecot(http://wiki2.dovecot.org/Pigeonhole/Sieve), but there is a problem for me!
I want to use html code in vacation, I find the mime params. But there is no example about it! I only find a example in https://www.rfc-editor.org/rfc/rfc5230 in 4.4, but it is not work! Maybe,I have some mistake? Who can give some more detail ? Thanks!