diff --git a/backend/ForumBackend.qml b/backend/ForumBackend.qml
index 54cc132..e3b2958 100644
--- a/backend/ForumBackend.qml
+++ b/backend/ForumBackend.qml
@@ -150,10 +150,10 @@ Object {
 
                 loginFinished = false //do not set loggedIn to false => ability to change login data
 
-                if (configModel.get(0).support_md5) {
+                if (configModel.supportMd5) {
                     console.log("md5")
                     password = Md5Utils.md5(password)
-                } else if (configModel.get(0).support_sha1) { //Untested yet
+                } else if (configModel.supportSHA1) { //Untested yet
                     console.log("sha1")
                     password = Sha1Utils.sha1(password)
                 } else {
diff --git a/backend/ForumConfigModel.qml b/backend/ForumConfigModel.qml
index 3b7cf5a..0ac1301 100644
--- a/backend/ForumConfigModel.qml
+++ b/backend/ForumConfigModel.qml
@@ -38,18 +38,28 @@ XmlListModel {
     query: "/methodResponse/params/param/value/struct"
 
     property bool hasLoaded: false
+
+    property string version
     property bool isVBulletin: false
+    property bool supportMd5: false
+    property bool supportSHA1: false
+    property bool subscribeForum: true
 
-    XmlRole { name: "support_md5"; query: "member[name='support_md5']/value/string()" }
-    XmlRole { name: "support_sha1"; query: "member[name='support_sha1']/value/string()" }
+    XmlRole { name: "support_md5"; query: "member[name='support_md5']/value/number()" }
+    XmlRole { name: "support_sha1"; query: "member[name='support_sha1']/value/number()" }
     XmlRole { name: "version"; query: "member[name='version']/value/string()" }
+    XmlRole { name: "subscribe_forum"; query: "member[name='subscribe_forum']/value/number()" }
 
     onStatusChanged: {
         if (status === XmlListModel.Ready) {
             var element = get(0)
-            if (element.version.trim().indexOf("vb") === 0) {
-                isVBulletin = true
-            }
+
+            version = element.version.trim()
+            isVBulletin = version.indexOf("vb") === 0
+            supportMd5 = (typeof(element.support_md5) === "number") ? element.support_md5 : false
+            supportSHA1 = (typeof(element.support_sha1) === "number") ? element.support_sha1 : false
+            subscribeForum = (typeof(element.subscribe_forum) === "number") ? element.subscribe_forum : true
+
             console.log("version: " + element.version.trim())
 
             console.log("configModel has loaded")
diff --git a/ui/components/Notification.qml b/ui/components/Notification.qml
index 711a8f1..f8a7144 100644
--- a/ui/components/Notification.qml
+++ b/ui/components/Notification.qml
@@ -37,14 +37,14 @@ Rectangle {
 
     function show(text) {
         queue.push(text)
-        if (!showing) {
+        if (!showing && !timer.running) { //!timer.running for the time between two notifications (when timer.interval === 800)
             update()
         }
     }
 
     function update() {
         notification.text = ""
-        notification.text = queue.pop()
+        notification.text = queue.shift()
         notification.showing = true
     }
 
diff --git a/ui/viewing/SubForumList.qml b/ui/viewing/SubForumList.qml
index 5d93fdd..a45cec7 100644
--- a/ui/viewing/SubForumList.qml
+++ b/ui/viewing/SubForumList.qml
@@ -37,13 +37,10 @@ ListView {
     id: forumsList
 
     property alias current_forum: categoryModel.parentForumId
-    property int current_topic: -1
-    property int selected_forum: -1
-    property string selected_title: ""
-    property bool canPost: false
-    property bool hasTopics: false
     property string mode: ""
     property bool moreLoading: false
+    property bool hasTopics: false
+    property bool canPost: false
 
     property bool viewSubscriptions: false
 
@@ -56,19 +53,16 @@ ListView {
     delegate: SubForumListItem {
         text: StringUtils.base64_decode(model.name)
         subText: StringUtils.base64_decode(model.description)
-        replies: model.topic ? (parseInt(model.posts) + 1) : 0 //+1 to include OP
+        replies: model.topic ? (model.posts + 1) : 0 //+1 to include OP
         author: model.topic ? StringUtils.base64_decode(model.author) : ""
-        has_new: model.has_new === '1' ? true : false
+        has_new: model.has_new
         progression: true
 
         onTriggered: {
-            selected_title = text
             if (model.topic) {
-                current_topic = -1
-                current_topic = model.id
+                forumsPage.pushThreadPage(model.id, text)
             } else {
-                selected_forum = -1
-                selected_forum = model.id
+                forumsPage.pushSubForumPage(model.id, text, model.can_subscribe, model.is_subscribed)
             }
         }
 
@@ -161,10 +155,12 @@ ListView {
         property bool viewSubscriptions: forumsList.viewSubscriptions
         query: viewSubscriptions ? "/methodResponse/params/param/value/struct/member[name='forums']/value/array/data/value/struct" : "/methodResponse/params/param/value/array/data/value/struct"
 
-        XmlRole { name: "id"; query: "member[name='forum_id']/value/string()" }
+        XmlRole { name: "id"; query: "member[name='forum_id']/value/number()" }
         XmlRole { name: "name"; query: "member[name='forum_name']/value/base64/string()" }
         XmlRole { name: "description"; query: "member[name='description']/value/base64/string()" }
         XmlRole { name: "logo"; query: "member[name='logo_url']/value/string()" }
+        XmlRole { name: "can_subscribe"; query: "member[name='can_subscribe']/value/number()" }
+        XmlRole { name: "is_subscribed"; query: "member[name='is_subscribed']/value/number()" }
 
         property bool checkingForChildren: false
 
@@ -178,7 +174,7 @@ ListView {
                 if (!checkingForChildren) {
                     console.debug("categoryModel has: " + count + " items");
 
-                    if (count !== 1 || parentForumId !== parseInt(get(0).id)) {
+                    if (count !== 1 || parentForumId !== get(0).id) {
                         insertResults()
                     } else { //Header with a child attribute
                         if (!topicModel.hasLoadedCompletely) {
@@ -218,7 +214,7 @@ ListView {
                 var element = get(i)
                 //We need to declare even unused properties here
                 //Needed when there are both topics and categories in a subforum
-                var pushObject = {"topic": false, "id": element.id.trim(), "name": element.name.trim(), "description": viewSubscriptions ? "" : element.description.trim(), "logo": element.logo.trim(), "author": "", "posts": "-1", "has_new": "0"}
+                var pushObject = {"topic": false, "id": element.id, "name": element.name.trim(), "description": viewSubscriptions ? "" : element.description.trim(), "logo": element.logo.trim(), "author": "", "posts": -1, "has_new": 0, "can_subscribe": viewSubscriptions ? 1 : element.can_subscribe, "is_subscribed": viewSubscriptions ? 1 : element.is_subscribed}
                 if (!isForumOverview) {
                     forumListModel.insert(i, pushObject)
                 } else {
@@ -356,12 +352,12 @@ ListView {
         property bool viewSubscriptions: forumsList.viewSubscriptions
         query: "/methodResponse/params/param/value/struct/member/value/array/data/value/struct"
 
-        XmlRole { name: "id"; query: "member[name='topic_id']/value/string()" }
+        XmlRole { name: "id"; query: "member[name='topic_id']/value/number()" }
         XmlRole { name: "title"; query: "member[name='topic_title']/value/base64/string()" }
 //        XmlRole { name: "description"; query: "member[name='short_content']/value/base64/string()" }
         XmlRole { name: "author"; query: "member[name='topic_author_name']/value/base64/string()" }
-        XmlRole { name: "posts"; query: "member[name='reply_number']/value/int/string()" }
-        XmlRole { name: "has_new"; query: "member[name='new_post']/value/boolean/string()" }
+        XmlRole { name: "posts"; query: "member[name='reply_number']/value/int/number()" }
+        XmlRole { name: "has_new"; query: "member[name='new_post']/value/boolean/number()" }
 
         onStatusChanged: {
             if (status === 1) {
@@ -369,7 +365,7 @@ ListView {
                     hasTopics = true //no else needed (and it may interfere with moreLoading)
 
                     //TODO: Check if if is needed or if it won't be added twice even without the if
-                    if (count === 1 && forumListModel.count > 0 && get(0).id.trim() === forumListModel.get(forumListModel.count - 1).id && forumListModel.get(forumListModel.count - 1).topic === true) {
+                    if (count === 1 && forumListModel.count > 0 && get(0).id === forumListModel.get(forumListModel.count - 1).id && forumListModel.get(forumListModel.count - 1).topic === true) {
                         //Do not add the element as it is a duplicate of the last one which was added
                         //Happens if a forum contains n * backend.topicsLoadCount topics (with n = 2, 3, 4, ...) and loadMore() is called (sadly, that's how the API handles the request)
 
@@ -385,7 +381,7 @@ ListView {
                             var element = get(i);
                             //We need to declare even unused properties here
                             //Needed when there are both topics and categories in a subforum
-                            forumListModel.append({"topic": true, "id": element.id.trim(), "name": element.title.trim(), "description": "" /*element.description.trim()*/, "logo": "", "author": element.author.trim(), "posts": element.posts.trim(), "has_new": element.has_new.trim()});
+                            forumListModel.append({"topic": true, "id": element.id, "name": element.title.trim(), "description": "", "logo": "", "author": element.author.trim(), "posts": element.posts, "has_new": element.has_new, "can_subscribe": 1, "is_subscribed": 0});
                         }
                     }
                 }
diff --git a/ui/viewing/SubForumPage.qml b/ui/viewing/SubForumPage.qml
index 3501146..c636c98 100644
--- a/ui/viewing/SubForumPage.qml
+++ b/ui/viewing/SubForumPage.qml
@@ -28,7 +28,8 @@
 import QtQuick 2.2
 import Ubuntu.Components 1.1
 import Ubuntu.Components.Popups 1.0
-import '../components'
+import "../components"
+import "../../backend"
 
 PageWithBottomEdge {
     id: forumsPage
@@ -41,11 +42,17 @@ PageWithBottomEdge {
     property alias current_forum: forumsList.current_forum
     property bool isForumOverview: current_forum === 0
 
-    property alias selectedTitle: forumsList.selected_title
+    property int selectedId: -1
+    property string selectedTitle: ""
+    property bool selectedCanSubscribe: false
+    property bool selectedIsSubscribed: false
 
     property alias loadingSpinnerRunning: loadingSpinner.running
     property bool showSections: false
 
+    property bool isSubscribed: false
+    property bool canSubscribe: false
+
     bottomEdgeTitle: i18n.tr("Subscriptions")
     bottomEdgeEnabled: !disableBottomEdge && current_forum >= 0 && backend.currentSession.loggedIn
     bottomEdgePageSource: (!disableBottomEdge && current_forum >= 0) ? Qt.resolvedUrl("SubForumPage.qml") : ""
@@ -117,10 +124,47 @@ PageWithBottomEdge {
         }
     }
 
+    Action {
+        id: subscribeAction
+        text: isSubscribed ? i18n.tr("Unsubscribe") : i18n.tr("Subscribe")
+        iconName: isSubscribed ? "starred" : "non-starred"
+        visible: backend.currentSession.loggedIn && !viewSubscriptions && backend.currentSession.configModel.subscribeForum && canSubscribe
+
+        onTriggered: subscriptionChange()
+
+        function subscriptionChange() {
+            if (isSubscribed) {
+                subscribeRequest.query = '<?xml version="1.0"?><methodCall><methodName>unsubscribe_forum</methodName><params><param><value>' + current_forum + '</value></param></params></methodCall>'
+            } else {
+                subscribeRequest.query = '<?xml version="1.0"?><methodCall><methodName>subscribe_forum</methodName><params><param><value>' + current_forum + '</value></param></params></methodCall>'
+            }
+
+            if (subscribeRequest.start()) {
+                isSubscribed = !isSubscribed //If the api request fails, it will be changed back later
+                subscribeRequest.notificationQueue.push(isSubscribed ? i18n.tr("Subscribed to this subforum") : i18n.tr("Unsubscribed from this subforum"))
+            }
+        }
+    }
+
+    ApiRequest {
+        id: subscribeRequest
+        checkSuccess: true
+        allowMultipleRequests: true
+        property var notificationQueue: [] //Needed when subscribeRequest.queryQueue.length > 1
+
+        onQuerySuccessResult: {
+            if (success) {
+                notification.show(notificationQueue.shift())
+            } else {
+                isSubscribed = !isSubscribed
+                notificationQueue.shift()
+            }
+        }
+    }
+
     function onNewTopicCreated(subject, topicId) {
         selectedTitle = subject
-        forumsList.current_topic = -1
-        forumsList.current_topic = topicId //Show topic
+        pushThreadPage(topicId) //Show thread
 
         forumsList.reload()
     }
@@ -128,6 +172,7 @@ PageWithBottomEdge {
     readonly property var headerActions: [
         reloadAction,
         newTopicAction,
+        subscribeAction,
         loginAction
     ]
 
@@ -177,43 +222,54 @@ PageWithBottomEdge {
 
         mode: (forumsPage.head.sections.selectedIndex === 1) ? "TOP" : ((forumsPage.head.sections.selectedIndex === 2) ? "ANN" : "")
 
-        onSelected_forumChanged: {
-            if (selected_forum > 0) {
-                component = Qt.createComponent("SubForumPage.qml");
-
-                if (component.status === Component.Ready) {
-                    finishSubForumPageCreation();
-                } else {
-                    component.statusChanged.connect(finishSubForumPageCreation);
-                }
-            }
-        }
+    }
 
-        function finishSubForumPageCreation() {
-            var page = component.createObject(mainView, {"title": selectedTitle, "current_forum": selected_forum, "loadingSpinnerRunning": true, "disableBottomEdge": disableBottomEdge})
-            pageStack.push(page)
+    function pushSubForumPage(forumId, title, canSubscribe, isSubscribed) {
+        selectedId = forumId
+        selectedTitle = title
+        selectedCanSubscribe = (typeof(canSubscribe) === "bool" || typeof(canSubscribe) === "number") ? canSubscribe : true
+        selectedIsSubscribed = (typeof(isSubscribed) === "bool" || typeof(isSubscribed) === "number") ? isSubscribed : false
+        component = Qt.createComponent("SubForumPage.qml")
+
+        if (component.status === Component.Ready) {
+            finishSubForumPageCreation()
+        } else {
+            component.statusChanged.connect(finishSubForumPageCreation)
         }
+    }
 
-        onCurrent_topicChanged: {
-            if (current_topic > 0) {
-                component = Qt.createComponent("ThreadPage.qml")
-
-                if (component.status === Component.Ready) {
-                    finishThreadPageCreation();
-                } else {
-                    component.statusChanged.connect(finishThreadPageCreation);
+    function finishSubForumPageCreation() {
+        var page = component.createObject(mainView, {"title": selectedTitle, "current_forum": selectedId, "loadingSpinnerRunning": true, "disableBottomEdge": disableBottomEdge, "canSubscribe": selectedCanSubscribe, "isSubscribed": selectedIsSubscribed})
+        page.onIsSubscribedChanged.connect(function() { //Change is_subscribed attribute when the subscription state is changed
+            for (var i = 0; i < forumsList.model.count; i++) {
+                if (forumsList.model.get(i).id === selectedId) {
+                    forumsList.model.setProperty(i, "is_subscribed", page.isSubscribed ? 1 : 0) //is_subscribed requires a number
+                    break
                 }
             }
-        }
+        })
+        pageStack.push(page)
+    }
 
-        function finishThreadPageCreation() {
-            var vBulletinAnnouncement = backend.currentSession.configModel.isVBulletin && forumsList.mode === "ANN"
-            var page = component.createObject(mainView, {"title": selectedTitle, "loadingSpinnerRunning": true, "forum_id": current_forum, "vBulletinAnnouncement": vBulletinAnnouncement})
-            page.current_topic = current_topic //Need to set vBulletinAnnouncement before current_topic!!! Therefore, this is executed after the creation of the Page.
-            pageStack.push(page)
+    function pushThreadPage(topicId, title) {
+        selectedId = topicId
+        selectedTitle = title
+        component = Qt.createComponent("ThreadPage.qml")
+
+        if (component.status === Component.Ready) {
+            finishThreadPageCreation()
+        } else {
+            component.statusChanged.connect(finishThreadPageCreation)
         }
     }
 
+    function finishThreadPageCreation() {
+        var vBulletinAnnouncement = backend.currentSession.configModel.isVBulletin && forumsList.mode === "ANN"
+        var page = component.createObject(mainView, {"title": selectedTitle, "loadingSpinnerRunning": true, "forum_id": current_forum, "vBulletinAnnouncement": vBulletinAnnouncement})
+        page.current_topic = selectedId //Need to set vBulletinAnnouncement before current_topic!!! Therefore, this is executed after the creation of the Page.
+        pageStack.push(page)
+    }
+
     Label {
         id: emptyView
         text: viewSubscriptions ? i18n.tr("You are not subscribed to any topics or forums") : ((forumsList.mode === "") ? i18n.tr("No topics available here") : ((forumsList.mode === "TOP") ? i18n.tr("No stickies available here") : i18n.tr("No announcements available here")))
diff --git a/ui/viewing/ThreadList.qml b/ui/viewing/ThreadList.qml
index a9445d5..fa958ae 100644
--- a/ui/viewing/ThreadList.qml
+++ b/ui/viewing/ThreadList.qml
@@ -41,6 +41,8 @@ ListView {
     property int totalPostCount: -1
     property bool canReply: false
     property bool isClosed: false
+    property bool canSubscribe: false
+    property bool isSubscribed: false
 
     property bool vBulletinAnnouncement: false
 
@@ -132,6 +134,32 @@ ListView {
 
                     isClosed = isClosedSubstring.trim() === "1"
                 }
+
+                //Check if can subscribe
+
+                var canSubscribeStringPosition = xml.indexOf("<name>can_subscribe</name>");
+                if (canSubscribeStringPosition < 0) {
+                    canSubscribe = true
+                } else {
+                    var openBoolTagPosition = xml.indexOf("<boolean>", canSubscribeStringPosition);
+                    var closeBoolTagPosition = xml.indexOf("</boolean>", openBoolTagPosition);
+                    var canSubscribeSubstring = xml.substring(openBoolTagPosition + 9, closeBoolTagPosition); //equals + "<boolean>".length
+
+                    canSubscribe = canSubscribeSubstring.trim() === "1"
+                }
+
+                //Check if is subscribed
+
+                var isSubscribedStringPosition = xml.indexOf("<name>is_subscribed</name>");
+                if (isSubscribedStringPosition < 0) {
+                    isSubscribed = false
+                } else {
+                    var openBoolTagPosition = xml.indexOf("<boolean>", isSubscribedStringPosition);
+                    var closeBoolTagPosition = xml.indexOf("</boolean>", openBoolTagPosition);
+                    var isSubscribedSubstring = xml.substring(openBoolTagPosition + 9, closeBoolTagPosition); //equals + "<boolean>".length
+
+                    isSubscribed = isSubscribedSubstring.trim() === "1"
+                }
             }
         }
 
diff --git a/ui/viewing/ThreadPage.qml b/ui/viewing/ThreadPage.qml
index ebbc143..8d0dce2 100644
--- a/ui/viewing/ThreadPage.qml
+++ b/ui/viewing/ThreadPage.qml
@@ -30,6 +30,7 @@ import Ubuntu.Components 1.1
 import Ubuntu.Components.ListItems 1.0
 import Ubuntu.Components.Popups 1.0
 import "../components"
+import "../../backend"
 
 PageWithBottomEdge {
     id: threadPage
@@ -75,6 +76,14 @@ PageWithBottomEdge {
     }
 
     head.actions: [
+        Action {
+            id: reloadAction
+            text: i18n.tr("Reload")
+            iconName: "reload"
+            onTriggered: {
+                threadList.reload()
+            }
+        },
         Action {
             id: loginAction
             text: i18n.tr("Login")
@@ -84,6 +93,27 @@ PageWithBottomEdge {
                 pageStack.push(loginPage)
             }
         },
+        Action {
+            id: subscribeAction
+            text: threadList.isSubscribed ? i18n.tr("Unsubscribe") : i18n.tr("Subscribe")
+            iconName: threadList.isSubscribed ? "starred" : "non-starred"
+            visible: backend.currentSession.loggedIn && threadList.canSubscribe
+
+            onTriggered: subscriptionChange()
+
+            function subscriptionChange() {
+                if (threadList.isSubscribed) {
+                    subscribeRequest.query = '<?xml version="1.0"?><methodCall><methodName>unsubscribe_topic</methodName><params><param><value>' + current_topic + '</value></param></params></methodCall>'
+                } else {
+                    subscribeRequest.query = '<?xml version="1.0"?><methodCall><methodName>subscribe_topic</methodName><params><param><value>' + current_topic + '</value></param></params></methodCall>'
+                }
+
+                if (subscribeRequest.start()) {
+                    threadList.isSubscribed = !threadList.isSubscribed //If the api request fails, it will be changed back later
+                    subscribeRequest.notificationQueue.push(threadList.isSubscribed ? i18n.tr("Subscribed to this topic") : i18n.tr("Unsubscribed from this topic"))
+                }
+            }
+        },
         Action {
             id: gotoAction
             text: i18n.tr("Go To Page")
@@ -95,17 +125,25 @@ PageWithBottomEdge {
                 popup.itemSelector.selectedIndex = selected
 //                popup.itemSelector.positionViewAtIndex(selected, ListView.Center) //TODO: Add to UI Toolkit?
             }
-        },
-        Action {
-            id: reloadAction
-            text: i18n.tr("Reload")
-            iconName: "reload"
-            onTriggered: {
-                threadList.reload()
-            }
         }
     ]
 
+    ApiRequest {
+        id: subscribeRequest
+        checkSuccess: true
+        allowMultipleRequests: true
+        property var notificationQueue: [] //Needed when subscribeRequest.queryQueue.length > 1
+
+        onQuerySuccessResult: {
+            if (success) {
+                notification.show(notificationQueue.shift())
+            } else {
+                threadList.isSubscribed = !threadList.isSubscribed
+                notificationQueue.shift()
+            }
+        }
+    }
+
     head.contents: Label {
         width: parent.width
         anchors.verticalCenter: parent.verticalCenter