diff --git a/src/Resend.js b/src/Resend.js
index 0e67a306bd..e07e571455 100644
--- a/src/Resend.js
+++ b/src/Resend.js
@@ -1,3 +1,19 @@
+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 var MatrixClientPeg = require('./MatrixClientPeg');
 var dis = require('./dispatcher');
 
diff --git a/src/Signup.js b/src/Signup.js
index 02ddaacc6d..74c4ad5f19 100644
--- a/src/Signup.js
+++ b/src/Signup.js
@@ -116,8 +116,17 @@ class Register extends Signup {
 
     _tryRegister(authDict) {
         var self = this;
+
+        var bindEmail;
+
+        if (this.username && this.password) {
+            // only need to bind_email when sending u/p - sending it at other
+            // times clobbers the u/p resulting in M_MISSING_PARAM (password)
+            bindEmail = true;
+        }
+
         return MatrixClientPeg.get().register(
-            this.username, this.password, this.params.sessionId, authDict
+            this.username, this.password, this.params.sessionId, authDict, bindEmail
         ).then(function(result) {
             self.credentials = result;
             self.setStep("COMPLETE");
diff --git a/src/TextForEvent.js b/src/TextForEvent.js
index 439d7b9ef5..5296ef833e 100644
--- a/src/TextForEvent.js
+++ b/src/TextForEvent.js
@@ -9,7 +9,17 @@ function textForMemberEvent(ev) {
     ) : "";
     switch (ev.getContent().membership) {
         case 'invite':
-            return senderName + " invited " + targetName + ".";
+            var threePidContent = ev.getContent().third_party_invite;
+            if (threePidContent) {
+                // TODO: When we have third_party_invite.display_name we should
+                // do this as "$displayname received the invitation from $sender"
+                // or equiv
+                return targetName + " received an invitation from " + senderName +
+                    ".";
+            }
+            else {
+                return senderName + " invited " + targetName + ".";
+            }
         case 'ban':
             return senderName + " banned " + targetName + "." + reason;
         case 'join':
@@ -101,6 +111,12 @@ function textForCallInviteEvent(event) {
     return senderName + " placed a " + type + " call." + supported;
 };
 
+function textForThreePidInviteEvent(event) {
+    var senderName = event.sender ? event.sender.name : event.getSender();
+    return senderName + " sent an invitation to " + event.getContent().display_name +
+     " to join the room.";
+};
+
 var handlers = {
     'm.room.message': textForMessageEvent,
     'm.room.name':    textForRoomNameEvent,
@@ -109,6 +125,7 @@ var handlers = {
     'm.call.invite':  textForCallInviteEvent,
     'm.call.answer':  textForCallAnswerEvent,
     'm.call.hangup':  textForCallHangupEvent,
+    'm.room.third_party_invite': textForThreePidInviteEvent
 };
 
 module.exports = {
diff --git a/src/components/structures/MatrixChat.js b/src/components/structures/MatrixChat.js
index f2424dc06e..8ad5b44762 100644
--- a/src/components/structures/MatrixChat.js
+++ b/src/components/structures/MatrixChat.js
@@ -41,7 +41,8 @@ module.exports = React.createClass({
         config: React.PropTypes.object.isRequired,
         ConferenceHandler: React.PropTypes.any,
         onNewScreen: React.PropTypes.func,
-        registrationUrl: React.PropTypes.string
+        registrationUrl: React.PropTypes.string,
+        startingQueryParams: React.PropTypes.object
     },
 
     PageTypes: {
@@ -75,6 +76,12 @@ module.exports = React.createClass({
         return s;
     },
 
+    getDefaultProps: function() {
+        return {
+            startingQueryParams: {}
+        };
+    },
+
     componentDidMount: function() {
         this.dispatcherRef = dis.register(this.onAction);
         if (this.state.logged_in) {
@@ -706,6 +713,7 @@ module.exports = React.createClass({
                     clientSecret={this.state.register_client_secret}
                     sessionId={this.state.register_session_id}
                     idSid={this.state.register_id_sid}
+                    email={this.props.startingQueryParams.email}
                     hsUrl={this.props.config.default_hs_url}
                     isUrl={this.props.config.default_is_url}
                     registrationUrl={this.props.registrationUrl}
diff --git a/src/components/structures/RoomView.js b/src/components/structures/RoomView.js
index a7944f91f5..2e8a39aae9 100644
--- a/src/components/structures/RoomView.js
+++ b/src/components/structures/RoomView.js
@@ -318,11 +318,7 @@ module.exports = React.createClass({
 
         if (this.state.searchResults) return;
 
-        if (this.needsScrollReset) {
-            if (DEBUG_SCROLL) console.log("Resetting scroll position after tile count change");
-            this._restoreSavedScrollState();
-            this.needsScrollReset = false;
-        }
+        this._restoreSavedScrollState();
 
         // have to fill space in case we're accepting an invite
         if (!this.state.paginating) this.fillSpace();
@@ -683,10 +679,6 @@ module.exports = React.createClass({
             }
             ++count;
         }
-        if (count != this.lastEventTileCount) {
-            if (DEBUG_SCROLL) console.log("Queuing scroll reset (event count changed; now "+count+"; was "+this.lastEventTileCount+")");
-            this.needsScrollReset = true;
-        }
         this.lastEventTileCount = count;
         return ret;
     },
diff --git a/src/components/structures/login/Registration.js b/src/components/structures/login/Registration.js
index 1570641556..19e55c4d76 100644
--- a/src/components/structures/login/Registration.js
+++ b/src/components/structures/login/Registration.js
@@ -39,6 +39,7 @@ module.exports = React.createClass({
         idSid: React.PropTypes.string,
         hsUrl: React.PropTypes.string,
         isUrl: React.PropTypes.string,
+        email: React.PropTypes.string,
         // registration shouldn't know or care how login is done.
         onLoginClick: React.PropTypes.func.isRequired
     },
@@ -185,6 +186,7 @@ module.exports = React.createClass({
                 registerStep = (
                     <RegistrationForm
                         showEmail={true}
+                        defaultEmail={this.props.email}
                         minPasswordLength={MIN_PASSWORD_LENGTH}
                         onError={this.onFormValidationFailed}
                         onRegisterClick={this.onFormSubmit} />
diff --git a/src/components/views/rooms/EventTile.js b/src/components/views/rooms/EventTile.js
index 8292cdf826..0b26000207 100644
--- a/src/components/views/rooms/EventTile.js
+++ b/src/components/views/rooms/EventTile.js
@@ -44,6 +44,7 @@ var eventTileTypes = {
     'm.call.hangup' : 'messages.TextualEvent',
     'm.room.name'   : 'messages.TextualEvent',
     'm.room.topic'  : 'messages.TextualEvent',
+    'm.room.third_party_invite': 'messages.TextualEvent'
 };
 
 var MAX_READ_AVATARS = 5;