diff --git a/server_admin/images/email-simple-example.png b/server_admin/images/email-simple-example.png
index 9c341e2e2a..f52be2e38b 100755
Binary files a/server_admin/images/email-simple-example.png and b/server_admin/images/email-simple-example.png differ
diff --git a/server_admin/topics/realms/email.adoc b/server_admin/topics/realms/email.adoc
index 723f026d83..9a2c9ac6a9 100644
--- a/server_admin/topics/realms/email.adoc
+++ b/server_admin/topics/realms/email.adoc
@@ -11,6 +11,27 @@ item and click the `Email` tab.
 .Email Tab
 image:../../{{book.images}}/email-tab.png[]
 
+Host::
+  `Host` denotes the SMTP server hostname used for sending emails.
+
+Port::
+  `Port` denotes the SMTP server port.
+
+From::
+  `From` denotes the address used for the `From` SMTP-Header for the emails sent.
+
+From Display Name::
+  `From Display Name` allows to configure an user friendly email address aliases (optional). If not set the plain `From` email address will be displayed in email clients.
+
+Reply To::
+  `Reply To` denotes the address used for the `Reply-To` SMTP-Header for the mails sent (optional). If not set the plain `From` email address will be used.
+
+Reply To Display Name::
+  `Reply To Display Name` allows to configure an user friendly email address aliases (optional). If not set the plain `Reply To` email address will be displayed.
+
+Envelope From::
+  `Envelope From` denotes the https://en.wikipedia.org/wiki/Bounce_address[Bounce Address] used for the `Return-Path` SMTP-Header for the mails sent (optional).
+
 As emails are used for recovering usernames and passwords it's recommended to use SSL or TLS, especially if the SMTP server is on an external network.
 To enable SSL click on `Enable SSL` or to enable TLS click on `Enable TLS`.
 You will most likely also need to change the `Port` (the default port for SSL/TLS is 465).