Sub-addressing
Mailbox users can tag their mail address like in me+facebook@example.org. They can control the tag handling in the users mailcow UI panel under Mailbox > Settings.
sub-addressing (RFC 5233) or plus addressing also known as tagging (do not mix with Tags)
Available Actions¶
1. Move this message to a sub folder "facebook" (will be created lower case if not existing)
2. Prepend the tag to the subject: "[facebook] Subject"
Please note: Uppercase tags are converted to lowercase except for the first letter. If you want to keep the tag as it is, please apply the following diff and restart mailcow:
diff --git a/data/conf/dovecot/global_sieve_after b/data/conf/dovecot/global_sieve_after
index e047136e..933c4137 100644
--- a/data/conf/dovecot/global_sieve_after
+++ b/data/conf/dovecot/global_sieve_after
@@ -15,7 +15,7 @@ if allof (
envelope :detail :matches "to" "*",
header :contains "X-Moo-Tag" "YES"
) {
- set :lower :upperfirst "tag" "${1}";
+ set "tag" "${1}";
if mailboxexists "INBOX/${1}" {
fileinto "INBOX/${1}";
} else {