How to Setup a Comment to Facebook Messenger Chatbot


Did you know you can use a chatbot to respond to anyone who leaves a comment on your Facebook posts? Trust me, this is a big deal in many ways. In this post I’ll show you how to setup comment to Facebook messenger chatbot.

Imagine you have a Facebook post, like this one:

This post invites your followers to a 5-Day Challenge.

But notice how the post includes a request that users leave a comment in order to receive a worksheet for the Challenge. Note that the request indicates they will receive this document via FB messenger.

This is important because you don’t want to “trick” your prospects. They need to know that a line of communication will be open via the messenger app.

Now take a look at what appears in your prospect’s smartphone via FB messenger, after they leave a comment and interact with your bot.

With this bot, you’ve accomplished several things all while staying within Facebook’s platform:

  1. You have increased your engagement on a FB post, which keeps the post more relevant for other users
  2. You have engaged your prospects in Facebook with something that is appealing to them
  3. You have delivered quality content
  4. You have started a conversation with your prospect via FB messenger
  5. Your prospect has become a FB messenger subscriber (just like with e-mail, but without the friction)
  6. You have engaged your prospect again, via FB messenger with another question, “Do you want me to hold you accountable?”

Are you getting excited by the power of chatbots yet?

How to Build a Comment to Facebook Messenger Chatbot

Inside of Mobile Monkey you must launch the FB Comment Guard (under Lead Magnets). The functionality will be similar with other chatbot programs.

After you’ve launched the bot builder, creating a chatbot that responds to comments on a Facebook post is a three-step process:

  1. Choose which FB post is going to respond via a chatbot
  2. Create the initial chatbot response if someone leaves a comment on your post
  3. Create the automated response when someone engages with the previous comment (NOTE: You cannot send someone this second chatbot message if they HAVE NOT responded to your initial chatbot message in Step #2)

Let’s break down each step.

Choose a Facebook Post

Your first step is to choose the post with which your Facebook chatbot will interact. You can see the option to “Respond only to specified posts” below in the Mobile Monkey interface.

Create the Initial Chatbot Response

Step 2 is to create the initial chatbot response. When someone leaves a comment (any comment), what is it that you want to say? Notice that in our example, we thank the user and then ask a yes / no question?

Ready for the worksheet?

Why is this important?

The initial message must contain a yes / no question because you want the user to engage with your bot. This is the only way you have permission to respond again. If the user types yes, then your bot can send more messages.

Create the Automated Response When Someone Engages Your Bot

The last step is to create the automated response when someone engages your chatbot. (NOTE: You can read about the mechanics of building a bot in a previous post.) Below you can see the dialog that we created using the chatbot builder. It includes:

  1. An image
  2. Text block (“Here is your 5-Day Content Marketing Blueprint”)
  3. A button (DOWNLOAD WORKSHEET) – This button links to a PDF Download
  4. Text block (“Do you want me to hold you accountable for creating each blog post?”)
  5. Two buttons (YES, PLEASE! and NO, I GOT THIS!) – These two buttons have different responses.

Notice how the response message is short and conversational in tone. The image matches the image in the FB post. We deliver exactly what the user expected. Finally, there is one additional question to get further engagement.


Facebook chatbots are powerful tools for engaging your prospects. The comment to bot is very effective. Give it a spin the next time you are looking for something a little more unique to interact with your audience.

Here’s to your success!


author gustavo karakey

P.S. There are many other ways to use FB chatbots to build your business and grow your subscriber list. This post has the details.