diff --git a/webmail/webmail.js b/webmail/webmail.js
index b389470e6a..a6b03f1d75 100644
--- a/webmail/webmail.js
+++ b/webmail/webmail.js
@@ -1040,7 +1040,7 @@ To simulate slow API calls and SSE events:
 
 Show additional headers of messages:
 
-	settingsPut({...settings, showHeaders: ['User-Agent', 'X-Mailer', 'Message-Id', 'List-Id', 'List-Post', 'X-Mox-Reason', 'TLS-Required']})
+	settingsPut({...settings, showHeaders: ['Delivered-To', 'User-Agent', 'X-Mailer', 'Message-Id', 'List-Id', 'List-Post', 'X-Mox-Reason', 'TLS-Required']})
 
 Enable logging and reload afterwards:
 
diff --git a/webmail/webmail.ts b/webmail/webmail.ts
index 9cf46c2306..01ddbcd4b1 100644
--- a/webmail/webmail.ts
+++ b/webmail/webmail.ts
@@ -52,7 +52,7 @@ To simulate slow API calls and SSE events:
 
 Show additional headers of messages:
 
-	settingsPut({...settings, showHeaders: ['User-Agent', 'X-Mailer', 'Message-Id', 'List-Id', 'List-Post', 'X-Mox-Reason', 'TLS-Required']})
+	settingsPut({...settings, showHeaders: ['Delivered-To', 'User-Agent', 'X-Mailer', 'Message-Id', 'List-Id', 'List-Post', 'X-Mox-Reason', 'TLS-Required']})
 
 Enable logging and reload afterwards: