diff --git a/src/UserSettingsStore.js b/src/UserSettingsStore.js
index f2ada35b24..55a0518d85 100644
--- a/src/UserSettingsStore.js
+++ b/src/UserSettingsStore.js
@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 'use strict';
-
+var q = require("q");
 var MatrixClientPeg = require("./MatrixClientPeg");
 var Notifier = require("./Notifier");
 
@@ -35,6 +35,11 @@ module.exports = {
     },
 
     loadThreePids: function() {
+        if (MatrixClientPeg.get().isGuest()) {
+            return q({
+                threepids: []
+            }); // guests can't poke 3pid endpoint
+        }
         return MatrixClientPeg.get().getThreePids();
     },
 
diff --git a/src/components/structures/RoomView.js b/src/components/structures/RoomView.js
index 56dd41d929..318489d9fd 100644
--- a/src/components/structures/RoomView.js
+++ b/src/components/structures/RoomView.js
@@ -733,7 +733,7 @@ module.exports = React.createClass({
         return ret;
     },
 
-    uploadNewState: function(new_name, new_topic, new_join_rule, new_history_visibility, new_power_levels) {
+    uploadNewState: function(newVals) {
         var old_name = this.state.room.name;
 
         var old_topic = this.state.room.currentState.getStateEvents('m.room.topic', '');
@@ -759,46 +759,54 @@ module.exports = React.createClass({
 
         var deferreds = [];
 
-        if (old_name != new_name && new_name != undefined && new_name) {
+        if (old_name != newVals.name && newVals.name != undefined && newVals.name) {
             deferreds.push(
-                MatrixClientPeg.get().setRoomName(this.state.room.roomId, new_name)
+                MatrixClientPeg.get().setRoomName(this.state.room.roomId, newVals.name)
             );
         }
 
-        if (old_topic != new_topic && new_topic != undefined) {
+        if (old_topic != newVals.topic && newVals.topic != undefined) {
             deferreds.push(
-                MatrixClientPeg.get().setRoomTopic(this.state.room.roomId, new_topic)
+                MatrixClientPeg.get().setRoomTopic(this.state.room.roomId, newVals.topic)
             );
         }
 
-        if (old_join_rule != new_join_rule && new_join_rule != undefined) {
+        if (old_join_rule != newVals.join_rule && newVals.join_rule != undefined) {
             deferreds.push(
                 MatrixClientPeg.get().sendStateEvent(
                     this.state.room.roomId, "m.room.join_rules", {
-                        join_rule: new_join_rule,
+                        join_rule: newVals.join_rule,
                     }, ""
                 )
             );
         }
 
-        if (old_history_visibility != new_history_visibility && new_history_visibility != undefined) {
+        if (old_history_visibility != newVals.history_visibility &&
+                newVals.history_visibility != undefined) {
             deferreds.push(
                 MatrixClientPeg.get().sendStateEvent(
                     this.state.room.roomId, "m.room.history_visibility", {
-                        history_visibility: new_history_visibility,
+                        history_visibility: newVals.history_visibility,
                     }, ""
                 )
             );
         }
 
-        if (new_power_levels) {
+        if (newVals.power_levels) {
             deferreds.push(
                 MatrixClientPeg.get().sendStateEvent(
-                    this.state.room.roomId, "m.room.power_levels", new_power_levels, ""
+                    this.state.room.roomId, "m.room.power_levels", newVals.power_levels, ""
                 )
             );
         }
 
+        deferreds.push(
+            MatrixClientPeg.get().setGuestAccess(this.state.room.roomId, {
+                allowRead: newVals.guest_read,
+                allowJoin: newVals.guest_join
+            })
+        );
+
         if (deferreds.length) {
             var self = this;
             q.all(deferreds).fail(function(err) {
@@ -883,19 +891,15 @@ module.exports = React.createClass({
             uploadingRoomSettings: true,
         });
 
-        var new_name = this.refs.header.getRoomName();
-        var new_topic = this.refs.room_settings.getTopic();
-        var new_join_rule = this.refs.room_settings.getJoinRules();
-        var new_history_visibility = this.refs.room_settings.getHistoryVisibility();
-        var new_power_levels = this.refs.room_settings.getPowerLevels();
-
-        this.uploadNewState(
-            new_name,
-            new_topic,
-            new_join_rule,
-            new_history_visibility,
-            new_power_levels
-        );
+        this.uploadNewState({
+            name: this.refs.header.getRoomName(),
+            topic: this.refs.room_settings.getTopic(),
+            join_rule: this.refs.room_settings.getJoinRules(),
+            history_visibility: this.refs.room_settings.getHistoryVisibility(),
+            power_levels: this.refs.room_settings.getPowerLevels(),
+            guest_join: this.refs.room_settings.canGuestsJoin(),
+            guest_read: this.refs.room_settings.canGuestsRead()
+        });
     },
 
     onCancelClick: function() {
diff --git a/src/components/views/rooms/RoomSettings.js b/src/components/views/rooms/RoomSettings.js
index eb9bfd90c8..a242c47e4a 100644
--- a/src/components/views/rooms/RoomSettings.js
+++ b/src/components/views/rooms/RoomSettings.js
@@ -31,6 +31,14 @@ module.exports = React.createClass({
         };
     },
 
+    canGuestsJoin: function() {
+        return this.refs.guests_join.checked;
+    },
+
+    canGuestsRead: function() {
+        return this.refs.guests_read.checked;
+    },
+
     getTopic: function() {
         return this.refs.topic.value;
     },
@@ -83,6 +91,10 @@ module.exports = React.createClass({
         if (history_visibility) history_visibility = history_visibility.getContent().history_visibility;
 
         var power_levels = this.props.room.currentState.getStateEvents('m.room.power_levels', '');
+        var guest_access = this.props.room.currentState.getStateEvents('m.room.guest_access', '');
+        if (guest_access) {
+            guest_access = guest_access.getContent().guest_access;
+        }
 
         var events_levels = power_levels.events || {};
 
@@ -154,6 +166,14 @@ module.exports = React.createClass({
                 <textarea className="mx_RoomSettings_description" placeholder="Topic" defaultValue={topic} ref="topic"/> <br/>
                 <label><input type="checkbox" ref="is_private" defaultChecked={join_rule != "public"}/> Make this room private</label> <br/>
                 <label><input type="checkbox" ref="share_history" defaultChecked={history_visibility == "shared"}/> Share message history with new users</label> <br/>
+                <label>
+                    <input type="checkbox" ref="guests_read" defaultChecked={history_visibility === "world_readable"}/>
+                    Allow guests to read messages in this room
+                </label> <br/>
+                <label>
+                    <input type="checkbox" ref="guests_join" defaultChecked={guest_access === "can_join"}/>
+                    Allow guests to join this room
+                </label> <br/>
                 <label className="mx_RoomSettings_encrypt"><input type="checkbox" /> Encrypt room</label> <br/>
 
                 <h3>Power levels</h3>