Flutter App Inbox

Learn how to handle app inbox notifications in Flutter.


App Inbox is a messaging channel that provides the ability to deliver rich, individually customized content to your users. Messages sent to App Inbox are saved on the user's device.

App Inbox provides the ability to send permanent content directly to your app from the CleverTap dashboard. Moreover, the inbox messages target individual segments such as other messaging channels. Your inbox can look different from another user's inbox; the possibilities are endless.

App Inbox

  • The CleverTap Flutter SDK allows you to create App Inbox notifications for your users.
  • You can use the App Inbox provided by CleverTap or create your own
  • You can design App Inbox notifications right from the dashboard


On the Android side, add the following inbox dependencies in your app's build.gradle.

//MANDATORY for App Inbox

implementation 'androidx.appcompat:appcompat:1.3.1'
implementation 'androidx.recyclerview:recyclerview:1.2.1'
implementation 'androidx.viewpager:viewpager:1.0.0'
implementation 'com.google.android.material:material:1.4.0'
implementation 'com.github.bumptech.glide:glide:4.12.0'

//Optional ExoPlayer Libraries for Audio/Video Inbox Messages. Audio/Video messages will be dropped without these dependencies

implementation 'com.google.android.exoplayer:exoplayer:2.15.1'
implementation 'com.google.android.exoplayer:exoplayer-hls:2.15.1'
implementation 'com.google.android.exoplayer:exoplayer-ui:2.15.1'


Initializing the Inbox provides a callback to two methods inboxDidInitialize() and inboxMessagesDidUpdate()


Configure styling and show the inbox by:

  1. Customize the config object and call the Inbox in the inboxDidInitialize() method
  2. Call this method on the button click which opens the CleverTap Inbox for your App

void inboxDidInitialize() {
    this.setState(() {
      print("inboxDidInitialize called");
      var styleConfig = {
          'noMessageTextColor': '#ff6600',
          'noMessageText': 'No message(s) to show.',
          'navBarTitle': 'App Inbox'

When a new inbox message arrives, the SDK provides the inboxMessagesDidUpdate() callback

void inboxMessagesDidUpdate() {
    this.setState(() async {
      print("inboxMessagesDidUpdate called");

App Inbox Item and Button Click Callbacks

Let's understand the types of buttons that App Inbox supports:

  • URL button: fires the deeplink with the associated URL.
  • Copy button: copies the associated text to the clipboard
  • KV button: contains the custom key-value pair for custom handling

The CleverTap Flutter SDK v1.5.2 and above supports inboxNotificationMessageClicked callback on the click of an App Inbox item, such as text or media.

From the CleverTap Flutter SDK v1.5.6 onwards and below v1.6.0, the inboxNotificationMessageClicked callback supports the button click besides the item click. Two new arguments contentPageIndex and buttonIndex are added to the callback's payload.

To use this, add a callback for inboxNotificationMessageClicked in the following way:


void inboxNotificationMessageClicked(
      Map<String, dynamic>? data, int contentPageIndex, int buttonIndex) {
    this.setState(() {
          "inboxNotificationMessageClicked called = InboxItemClicked at page-index $contentPageIndex with button-index $buttonIndex");

      var inboxMessageClicked = data?["msg"];
      if (inboxMessageClicked == null) {

      //The contentPageIndex corresponds to the page index of the content, which ranges from 0 to the total number of pages for carousel templates. For non-carousel templates, the value is always 0, as they only have one page of content.
      var messageContentObject = inboxMessageClicked["content"][contentPageIndex];

      //The buttonIndex corresponds to the CTA button clicked (0, 1, or 2). A value of -1 indicates the app inbox body/message clicked.
      if (buttonIndex != -1) {
        //button is clicked
        var buttonObject = messageContentObject["action"]["links"][buttonIndex];
        var buttonType = buttonObject?["type"];
        print("type of button clicked: $buttonType");
      } else {
        //Item's body is clicked
        print("type/template of App Inbox item: ${inboxMessageClicked["type"]}");


Parameters received in inboxNotificationMessageClicked callback

  • The data parameter represents the entire App Inbox Item object.
  • The contentPageIndex parameter corresponds to the page index of the content, which ranges from 0 to n-1 (where n is the total number of pages for carousel templates). The non-carousel templates always have a value of 0, because they have only one page of content.
  • The buttonIndex parameter corresponds to the App Inbox button (0, 1, or 2), that is clicked. A value of -1 in buttonIndex field indicates the entire App Inbox Item is clicked.

The CleverTap Flutter SDK v1.1.1 and above supports an exclusive inboxNotificationButtonClicked callback on the click of KV type of buttons. It returns a Map of Key-Value pairs. To use this, add a callback for inboxNotificationButtonClicked in following way:


void inboxNotificationButtonClicked(Map<String, dynamic>? map) {
    this.setState(() {
      print("inboxNotificationButtonClicked called = ${map.toString()}");

Creating your own App Inbox

You can choose to create your own App Inbox by calling the following APIs

Initialize App Inbox


Show App Inbox

var styleConfig = {
  'noMessageTextColor': '#ff6600',
  'noMessageText': 'No message(s) to show.',
  'navBarTitle': 'App Inbox'

Get Total Inbox Message Count

int total = await CleverTapPlugin.getInboxMessageCount();
print("Total count = " + total.toString());

Get Total Inbox Unread Count

int unread = await CleverTapPlugin.getInboxMessageUnreadCount();
print("Unread count = " + unread.toString());

Get All Inbox Messages

List messages = await CleverTapPlugin.getAllInboxMessages();

Get All Inbox Unread Messages

List messages = await CleverTapPlugin.getUnreadInboxMessages();

Get Inbox Message for the given message-id

var messageForId = await CleverTapPlugin.getInboxMessageForId(messageId);

Delete Message for the given message-id

await CleverTapPlugin.deleteInboxMessageForId(messageId);

Mark Message as Read for the given message-id

var messageList = await CleverTapPlugin.getUnreadInboxMessages();
    if (messageList == null || messageList.length == 0) return;
    Map<dynamic, dynamic> itemFirst = messageList[0];
    if (Platform.isAndroid) {
      await CleverTapPlugin.markReadInboxMessageForId(itemFirst["id"]);
    } else if (Platform.isIOS) {
      await CleverTapPlugin.markReadInboxMessageForId(itemFirst["_id"]);

Raise Notification Viewed event for Inbox Message. Message-id should be a String

await CleverTapPlugin.pushInboxNotificationViewedEventForId(messageId);

Raise Notification Clicked event for Inbox Message. Message-id should be a String

await CleverTapPlugin.pushInboxNotificationClickedEventForId(messageId);