Added emailChange listener to API

modules/API/API.js

@@ -363,6 +363,24 @@ class API {
         });
     }
 
+    /**
+     * Notify external application (if API is enabled) that user changed their
+     * email.
+     *
+     * @param {string} id - User id.
+     * @param {string} email - The new email of the participant.
+     * @returns {void}
+     */
+    notifyEmailChanged(
+            id: string,
+            { email }: Object) {
+        this._sendEvent({
+            name: 'email-change',
+            email,
+            id
+        });
+    }
+
     /**
      * Notify external application (if API is enabled) that the conference has
      * been joined.

modules/API/external/external_api.js

@@ -40,6 +40,7 @@ const events = {
     'audio-availability-changed': 'audioAvailabilityChanged',
     'audio-mute-status-changed': 'audioMuteStatusChanged',
     'display-name-change': 'displayNameChange',
+    'email-change': 'emailChange',
     'feedback-submitted': 'feedbackSubmitted',
     'incoming-message': 'incomingMessage',
     'outgoing-message': 'outgoingMessage',
@@ -398,6 +399,14 @@ export default class JitsiMeetExternalAPI extends EventEmitter {
                 }
                 break;
             }
+            case 'email-change': {
+                const user = this._participants[userID];
+
+                if (user) {
+                    user.email = data.email;
+                }
+                break;
+            }
             case 'avatar-changed': {
                 const user = this._participants[userID];
 
@@ -633,6 +642,18 @@ export default class JitsiMeetExternalAPI extends EventEmitter {
         return displayName;
     }
 
+    /**
+     * Returns the email of a participant.
+     *
+     * @param {string} participantId - The id of the participant.
+     * @returns {string} The email.
+     */
+    getEmail(participantId) {
+        const { email } = this._participants[participantId] || {};
+
+        return email;
+    }
+
     /**
      * Returns the formatted display name of a participant.
      *