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diff --git a/user_manual/groupware/mail.rst b/user_manual/groupware/mail.rst
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--- a/user_manual/groupware/mail.rst
+++ b/user_manual/groupware/mail.rst
@@ -20,6 +20,18 @@ Switch layout
 
 .. figure:: images/mail_layout.png
 
+Use Compact Mode
+~~~~~~~~~~~~~~~~
+.. versionadded:: 5.7.0
+
+Compact mode offers a cleaner and more efficient way to view your messages. Avatars are hidden, selection checkboxes are always visible, and the preview of messages is removed. It saves space allowing you to see more emails at once.
+
+1. Visit the mail settings
+2. Go to **Appearance**
+3. Toggle the Compact Mode
+
+.. figure:: images/use-compact-mode.png
+
 Message Display / Operation Mode
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~