Document the recipient info feature

Signed-off-by: greta <gretadoci@gmail.com>

user_manual/groupware/mail.rst

@@ -155,6 +155,17 @@ Compose messages
 1. Click new message on the top left of your screen
 2. Start writing your message
 
+
+Recipient info on composer
+--------------------------
+
+.. versionadded:: 4.2
+
+When you add your first recipient or contact in the "To" field, a right pane will appear displaying the saved profile details of that contact.
+Adding a second contact will collapse the list, allowing you to select and expand any contact you added to view their details.
+If you prefer to focus solely on writing in the composer, you can hide the right pane by clicking the expand icon in the top-right corner.
+To show the right pane again, simply click the minimize icon in the same location.
+
 Mention contacts
 ----------------
 
@@ -352,7 +363,7 @@ Security
 Phishing detection
 ~~~~~~~~~~~~~~~~~~
 
-.. versionadded:: 4.0 
+.. versionadded:: 4.0
 
 The Mail app will check for potential phishing attempts and will display a warning to the user.
 
@@ -361,15 +372,15 @@ The checks are the following:
 * The sender address saved in the addressbook is not the same as the one in the mail account
 * The sender is using a custom email address that doesn't match the from address
 * The sent date is set in the future
-* Links in the message body are not pointing to the displayed text 
+* Links in the message body are not pointing to the displayed text
 * The reply-to address is not the same as the sender address
 
 .. note:: Please note that the warning does not mean that the message is a phishing attempt. It only means that the Mail app detected a potential phishing attempt.
 
 Internal addresses
 ~~~~~~~~~~~~~~~~~~
 
-.. versionadded:: 4.0 
+.. versionadded:: 4.0
 
 The Mail app allows adding internal addresses and domains, and will warn the user if the address is not in the list, when sending and upon receiving a message.
 
@@ -378,5 +389,5 @@ To add an internal address:
 1. Open the mail settings
 2. Navigate to Privacy and security section
 3. Enable the internal addresses by ckicjin on the checkbox
-4. Click the Add internal address button 
-5. Enter the address or domain and click Add
+4. Click the Add internal address button
+5. Enter the address or domain and click Add