How to work with Facebook* tags?

Facebook* prohibits sending messages from public pages after 24 hours from the last user's reply. Only certain types of messages marked with corresponding tags are allowed. 

Supported tags:

• ACCOUNT_UPDATE - to send notifications about changes in an application or user account.
• POST_PURCHASE_UPDATE - to send updates on user’s purchases.
• EVENT_UPDATE - for sending reminders or updated information on events to which the user is registered.
• HUMAN_AGENT - for sending messages when a user's question cannot be solved within the standard correspondence window.

To continue communicating with the user via Chat2Desk after 24 hours, add these tags to messages using the following markup:

• @FB-tag <ACCOUNT_UPDATE>@ Message text
• @FB-tag <POST_PURCHASE_UPDATE>@ Message text
• @FB-tag <EVENT_UPDATE>@ Message text
• @FB-tag <HUMAN_AGENT>@ Message text

Please note that tags should not be used to send promotional messages, including special offers, coupons and discounts. Misuse of tags may result in a ban on sending messages to the public page.