If your business is looking to receive more messages from potential customers, you can boost a Facebook post by creating an ad with the Messages objective from your Facebook Business Page. If you're looking for advanced setup, you can also create these ads through Ads Manager.

To create your ad that clicks to Messenger from your Facebook Business Page:

1. Choose one of the existing posts from your Page and click the blue Boost Post button. Your boost may be unavailable if the button is faded and unclickable.
2. In the Objective section, click the Messages objective.
3. Under the Welcome message section, click Show. Here you can preview or edit your greeting and the prepopulated questions that people might want to ask your business.
4. To edit your greeting and/or questions, edit the fields under the Welcome message section. Setting up the welcome message that people see in Messenger after they click on your ad is important to the success of your campaign, as a customer must reply to your business before you can start communicating with them due to privacy settings.
• Your greeting welcomes a customer to the conversation. You can edit the text of this greeting and change or remove personalisation, which addresses your customers by name.
• The questions are meant to help start and guide the conversation by suggesting options for customers to select. Your default questions are prepopulated based on common questions for your Page's category, but they can easily be edited to support your ad's content.
5. Select the audience you'd like to reach, or click Create New Audience. If you click Create New Audience, you'll have the option to create an audience based on traits such as age, location and interests.
6. Click the drop-down below Total budget to select a budget for your boosted post. You can select a prefilled budget or click Choose your Own and type in a custom budget.
7. Choose a duration option, or type in a custom end date next to Run.
8. Select your preferred payment option. If there are no payment options available for your account, you'll be prompted to add one after clicking Boost.
9. Click Boost to run your ad.

* Nguồn: Facebook