diff --git a/src/components/MessageView/MessageView.js b/src/components/MessageView/MessageView.js
index 22a0316..95e7403 100644
--- a/src/components/MessageView/MessageView.js
+++ b/src/components/MessageView/MessageView.js
@@ -29,6 +29,8 @@ export default function MessageView({ datetime, userAlias, from_name, from_email
 MessageView.propTypes = {
     /** Name of message sender. */
     "from_name": PropTypes.string,
+    /** Account alias of message sender. */
+    "userAlias": PropTypes.string,
     /** Date the message was sent in ISO 8601 format. */
     "datetime": PropTypes.string,
     /** Email address of message sender. */
@@ -43,6 +45,7 @@ MessageView.propTypes = {
 
 MessageView.defaultProps = {
     "from_name": "Name Unavailable",
+    "userAlias": "Alias Unavailable",
     "datetime": new Date(1970, 1, 1, 0, 0, 0, 0),
     "from_email": "Email Unavailable",
     "to": [],