Send to Messenger Plugin

When your Facebook app is in Development Mode, plugin and API functionality will only work for admins, developers and testers of the app that have a valid session. After your app is approved and public, it will work for the general public.

The "Send to Messenger" plugin is used to trigger an authentication event to your webhook. You can pass in data to know which user and transaction was tied to the authentication event, and link the user on your back-end.

The first time a person clicks on this button, a confirmation popup will be presented.

Requirements

Facebook Javascript SDK

To use the send to Messenger plugin, you must include the Facebook for Javascript SDK in the page where the plugin will be rendered.

For instructions on including the SDK, see the Facebook for Javascript SDK Quick Start.

Setup

<div class="fb-send-to-messenger" 
  messenger_app_id="<APP_ID>" 
  page_id="PAGE_ID" 
  ref="<PASS_THROUGH_PARAM>" 
  color="<blue | white>" 
  size="<standard | large | xlarge>">
</div>

For a complete description of available attributes, see the send to Messenger plugin reference.

Event Subscription

Subscribe to plugin events.

      <script>

      FB.Event.subscribe('send_to_messenger', function(e) {
      // callback for events triggered by the plugin

      });

      </script>

Event Fields

Field Name	Type	Description
`event`	Enum	Name of event. Possible values: `rendered`, `clicked`, `not_you`, `opt_in`.
`ref`	String	Contains the value set on the `data-ref` param on the plugin. Only alphanumeric characters as well as -, _, and = are supported.
`is_after_optin`	Boolean	Indicates whether event happened after the confirmation pop-up was confirmed.
`pluginID`	undefined	This field is not used.

Webhook Event

The send to Messenger plugin triggers the messaging_optins webhook event.

Customizing Login Behavior

If there is no logged in Facebook user, the plugin will be rendered without a user identity displayed. Clicking the button will prompt the user to log in.

If you set allow_login to false, then the plugin will not render for users who are not logged in.

Note that the plugin will render without a Facebook session only if the app is approved and public.

CTA text options

The Send to Messenger plugin also supports the cta_text attribute. This allows you to choose the button text for the plugin from a pre-defined list of strings. When the cta_text attribute is used, most signed-in users will only have to click the plugin button itself to opt in, without having to re-confirm with the popup, and the messaging_optins event will be delivered immediately.

The following values are supported for the cta_text attribute:

GET_THIS_IN_MESSENGER
RECEIVE_THIS_IN_MESSENGER
SEND_THIS_TO_ME
GET_CUSTOMER_ASSISTANCE
GET_CUSTOMER_SERVICE
GET_SUPPORT
LET_US_CHAT
SEND_ME_MESSAGES
ALERT_ME_IN_MESSENGER
SEND_ME_UPDATES
MESSAGE_ME
LET_ME_KNOW
KEEP_ME_UPDATED
TELL_ME_MORE
SUBSCRIBE_IN_MESSENGER
SUBSCRIBE_TO_UPDATES
GET_MESSAGES
SUBSCRIBE
GET_STARTED_IN_MESSENGER
LEARN_MORE_IN_MESSENGER
GET_STARTED