diff --git a/FAQ.md b/FAQ.md
index 50df4816d8..e9f0136916 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -2472,6 +2472,7 @@ You can enable downloading message headers in the connection settings and check
 Some common header conditions (regex):
 
 * *.*Auto-Submitted:.** [RFC3834](https://tools.ietf.org/html/rfc3834)
+* *.*List-Unsubscribe:.** [RFC3834](https://datatracker.ietf.org/doc/html/rfc2369)
 * *.*Content-Type: multipart/report.** [RFC3462](https://tools.ietf.org/html/rfc3462)
 
 To match *set* IMAP flags (keywords) via a header condition (since version 1.1777):