diff --git a/src/components/structures/UserSettings.js b/src/components/structures/UserSettings.js
index a33095b8e8..6454515c29 100644
--- a/src/components/structures/UserSettings.js
+++ b/src/components/structures/UserSettings.js
@@ -61,6 +61,7 @@ module.exports = React.createClass({
             phase: "UserSettings.LOADING", // LOADING, DISPLAY
             email_add_pending: false,
             vectorVersion: null,
+            rejectingInvites: false,
         };
     },
 
@@ -80,6 +81,12 @@ module.exports = React.createClass({
             });
         }
 
+        // Bulk rejecting invites:
+        // /sync won't have had time to return when UserSettings re-renders from state changes, so getRooms()
+        // will still return rooms with invites. To get around this, add a listener for
+        // membership updates and kick the UI.
+        MatrixClientPeg.get().on("RoomMember.membership", this._onInviteStateChange);
+
         dis.dispatch({
             action: 'ui_opacity',
             sideOpacity: 0.3,
@@ -101,6 +108,7 @@ module.exports = React.createClass({
             middleOpacity: 1.0,
         });
         dis.unregister(this.dispatcherRef);
+        MatrixClientPeg.get().removeListener("RoomMember.membership", this._onInviteStateChange);
     },
 
     _refreshFromServer: function() {
@@ -280,8 +288,27 @@ module.exports = React.createClass({
         Modal.createDialog(DeactivateAccountDialog, {});
     },
 
-    _onRejectAllInvitesClicked: function() {
-        console.log("yup");
+    _onInviteStateChange: function(event, member, oldMembership) {
+        if (member.userId === this._me && oldMembership === "invite") {
+            this.forceUpdate();
+        }
+    },
+
+    _onRejectAllInvitesClicked: function(rooms, ev) {
+        this.setState({
+            rejectingInvites: true
+        });
+        // reject the invites
+        let promises = rooms.map((room) => {
+            return MatrixClientPeg.get().leave(room.roomId);
+        });
+        // purposefully drop errors to the floor: we'll just have a non-zero number on the UI
+        // after trying to reject all the invites.
+        q.allSettled(promises).then(() => {
+            this.setState({
+                rejectingInvites: false
+            });
+        });
     },
 
     _renderUserInterfaceSettings: function() {
@@ -429,13 +456,23 @@ module.exports = React.createClass({
         if (invitedRooms.length === 0) {
             return null;
         }
+
+        let Spinner = sdk.getComponent("elements.Spinner");
+
+        let reject = <Spinner />;
+        if (!this.state.rejectingInvites) {
+            reject = (
+                <button className="mx_UserSettings_button danger"
+                onClick={this._onRejectAllInvitesClicked.bind(this, invitedRooms)}>
+                    Reject all {invitedRooms.length} invites
+                </button>
+            );
+        }
+
         return <div>
             <h3>Bulk Options</h3>
                 <div className="mx_UserSettings_section">
-                    <button className="mx_UserSettings_button danger"
-                        onClick={this._onRejectAllInvitesClicked}>
-                            Reject all {invitedRooms.length} invites
-                    </button>
+                    {reject}
                 </div>
         </div>;
     },