diff --git a/mail/templates/default/app.css b/mail/templates/default/app.css
index 16a9569191..08f9d7cd24 100644
--- a/mail/templates/default/app.css
+++ b/mail/templates/default/app.css
@@ -521,7 +521,7 @@ div.mail-compose_fileselector {
 }
 
 #mail-display, #mail-compose {
-	min-height: 500px;
+	min-height: 768px;
 }
 .mailDisplayContainer, .mailDisplayAttachments {
 	display: block;
diff --git a/mail/templates/pixelegg/app.css b/mail/templates/pixelegg/app.css
index fedea2b17d..ef673407f2 100755
--- a/mail/templates/pixelegg/app.css
+++ b/mail/templates/pixelegg/app.css
@@ -521,7 +521,7 @@ div.mail-compose_fileselector {
 }
 #mail-display,
 #mail-compose {
-  min-height: 500px;
+  min-height: 768px;
 }
 .mailDisplayContainer,
 .mailDisplayAttachments {
@@ -976,7 +976,7 @@ div#mail-index div#mail-index_mailPreview div#mail-index_mailPreviewHeadersSubje
 }
 #mail-compose {
   width: 870px;
-  min-height: 500px;
+  min-height: 768px;
   padding: 5px;
   /*// ###############################################################################*/
   /*// Mail Header*/
@@ -1470,7 +1470,7 @@ div#mail-index div#mail-index_mailPreview div#mail-index_mailPreviewHeadersSubje
  */
 #mail-display {
   width: 870px;
-  min-height: 500px;
+  min-height: 768px;
   padding: 5px;
   /*.mailDisplayHeaderSection{*/
   /*top: 0;*/
diff --git a/mail/templates/pixelegg/app.less b/mail/templates/pixelegg/app.less
index 3507775d14..e3337135b2 100755
--- a/mail/templates/pixelegg/app.less
+++ b/mail/templates/pixelegg/app.less
@@ -332,7 +332,7 @@ div#mail-index{
 #mail-compose{
     //	gesamtbreite
     width: 870px;
-	min-height: 500px;
+	min-height: 768px;
     padding: 5px;
 
 
@@ -667,7 +667,7 @@ div#mail-index{
 #mail-display{
     //	gesamtbreite
     width: 870px;
-	min-height: 500px;
+	min-height: 768px;
     padding: 5px;
 
     /*.mailDisplayHeaderSection{*/