Add animation params

UI/WebServerResources/scss/views/MailerUI.scss

@@ -8,6 +8,23 @@
   min-width: ($detailView-width - $pitch);
   max-width: ($detailView-width + $pitch);
   margin: 0 auto;
+  &.ng-enter {
+    border: 4px solid red;
+    transition: all 1s linear;
+    &.ng-enter-active {
+      border: 4px solid green;
+      transition: all 1s linear;
+    }
+  }
+  &.ng-leave {
+    border: 4px solid blue;
+    transition: all 1s linear;
+    &.ng-leave-active {
+      border: 4px solid blue;
+      transition: all 1s linear;
+      filter: opacity(0);
+    }
+  }
 }
 
 // Message view header