diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php
index abfcb3564..d33c50f3d 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php
@@ -19,7 +19,7 @@ namespace MailSo\Imap;
 abstract class SearchCriterias
 {
 	const
-		RegEx = 'in|e?mail|from|to|subject|has|is|date|since|before|text|body|size|larger|bigger|smaller|maxsize|minsize';
+		RegEx = 'in|e?mail|from|to|subject|has|is|date|since|before|text|body|size|larger|bigger|smaller|maxsize|minsize|keyword';
 
 	/**
 		https://datatracker.ietf.org/doc/html/rfc3501#section-6.4.4