mailcow-dockerized/data/web/inc/presets/sieve/sieve_8.yml

headline: lang.sieve_preset_8
content: |
  require "fileinto";
  require "mailbox";
  require "variables";
  require "subaddress";
  require "envelope";
  require "duplicate";
  require "imap4flags";
  if header :matches "To" "*mail@domain.tld*" {
    redirect "anothermail@anotherdomain.tld";
    setflag "\\seen"; /* Mark mail as read */
    fileInto "INBOX/SubFolder"; /* Move mail on subfolder after */
  } else {
    # The rest goes into INBOX
    # default is "implicit keep", we do it explicitly here
    keep;
  }