How to Create Auto Facebook Comment Bot for Free in 2024

By Joren Wouters Updated on

In this tutorial, I break down how you can automatically reply to comments on Facebook. Basically, we are going to create our own Facebook Comment Bot.

I will show you how to:

  • Create a Facebook Chat Funnel that generates leads from Facebook, on auto pilot
  • Boost the engagement of your Facebook Page
  • And how you can set up the automated funnel yourself

I will even give you a FREE template, so you can just copy-and-paste, and don’t have to build it yourself.

Let’s dive in!

What is Facebook Comment Automation?

Facebook Comment Automation allows you to start a conversation in Messenger with any user who comments on your Facebook post.

It’s a great way to boost your Facebook engagement, turn your followers into leads and get more sales with your Facebook comments auto reply system.

The best part?

You are not limited to sending a single message, but you can create a complete Facebook Chat funnel.

Here’s why that’s way better than using traditional “landing pages” 👇

Why auto reply to comments on Facebook?

Many businesses already use lead generation funnels on Facebook. But, they use landing pages instead of chat funnels.

And because of this, they are missing out on thousands of leads and Facebook comments auto reply engagements. Here’s why:

So a normal Facebook lead funnel looks like this:

  1. You are promoting your lead magnet on your Facebook posts and telling people they should click on the link in your post
  2. When they click on that, they will go to your landing page
  3. And then eventually here, they will sign up for your lead magnet

Overview of a normal Facebook Lead funnel

That’s a normal Facebook lead funnel, right?

The problem is that when we send our Facebook traffic to our landing page, we lose about 80% of it. Because most people don’t click on our link.

So we are already losing 80% there.

Of the people that come to our landing page, on average, only 10% converts. So that means that only 10% leave their name and email address to sign up for a lead magnet.

So if we start with 1000 people on Facebook, eventually only 200 people will come to our landing page. And only 20 people will actually sign up and become a lead:

Results of a normal Facebook Funnel

And this funnel also hurts your Facebook reach and engagement, because you are sending people away from Facebook. And that is not what Facebook wants.

Facebook wants to make money. And they make money by showing ads to people.

But they can’t show ads if someone is not on the Facebook platform.

As a Facebook Page, if you keep people on the Facebook platform, this will help you rank better in the algorithm.

And that’s exactly what we are going to do by using a Facebook Chat Funnel.

Facebook Bot Comments Strategy

Instead of asking people to click on our link, we ask them to comment on our Facebook post with a specific word.
So let’s say, we are sharing a free guide with our followers, we ask them to comment the word “GUIDE”.

Once they comment that word on our Facebook post, we can use the auto reply comment Facebook strategy with a comment in the comment section and start a conversation in Facebook Messenger.

And this is where the difference lies, so we are not sending them to a landing page, we are starting a conversation.

Inside the Messenger conversation, we can ask for their email and deliver our lead magnet:

Overview of a Facebook Chat Funnel

And by doing so, we can at least 10X our results.

Because instead of losing 80% of our traffic, we are keeping 100% of our Facebook traffic.

When we use Facebook Chat Funnels for our own clients, we see that 50% will sign up for your lead magnet once they enter the funnel.

Benefits of using a Facebook Chat Funnel

So if we are starting out with 1000 Facebook followers, we actually end up with 500 leads.

Results of a Facebook Chat Funnel

In the previous situation, we only had 20 people signing up for our lead magnet. Now, we have 500.

Just by changing from a landing page to a Messenger conversation.

And by using this strategy, we will also increase the engagement of our Facebook Page.

Because when someone comments on your Facebook post, you get an extra comment on your post.

Then you automatically reply to that comment, which is also another comment on your post.

Then someone replies to your message in Facebook Messenger, which is another touchpoint.

And eventually, you have an automated back-and-forth conversation. It consists of multiple messages, all of which are touchpoints.

Touchpoints to boost your engagement with a Facebook Chat Funnel

These touchpoints tell Facebook that people like your Page.

That will boost your rank in the Facebook algorithm, expand your reach and increase your engagement again.
So now that you know why we should use a Facebook Chat Funnel, let’s start with creating one.


How to Set up Facebook Comments Bot

It’s super simple to create an Auto Reply Bot for Facebook Comments. Here’s how you can do it in 3 steps:

Step 1: Create a Free Manychat account and Connect it to Facebook

Manychat is our preferred platform for creating Facebook Chat Funnels, such as the Auto Reply Bot for Facebook Comments. I’ve used Manychat for most of my clients for the last 4 years and the reasons why I’m using it are:

  • Easy to use: Simple to use, perfect for beginners in chat automation.
  • Meta approved: Fully approved by Meta, so you don’t risk getting banned from Meta.
  • Affordable: with a free option and a Pro plan beginning at just $15 monthly.

Just click on the button below to create a free Manychat account (and get my discount code for 1 month of the Pro plan for free)

Create Free Manychat Account

Your Discount Code



Here, click on Get started for Free:


Choose for Facebook Messenger:

Get started with Manychat using your Facebook account

And click on Continue with Facebook to connect your Facebook account:

Continue with your Facebook account to log in to Manychat

Once you’re logged in, you can select the Facebook Page and connect it to Manychat.

The next part is to set Manychat as your Primary Receiver. By doing this, you basically tell Facebook that you want Manychat to handle your Facebook comments and messages.

In your Manychat dashboard, click on Settings in the left-hand menu and then select Messenger from the settings options.

Facebook Messenger settings in Manychat

Then scroll down to find Current Manychat Role and ensure it is set to Primary. If not, click on the provided link and follow the steps to change it:

Set Manychat as your primary receiver in Facebook

This is very important, if you don’t have Manychat as set to Primary, automated replies on Facebook comments will not work.

If you want a full tutorial on how to connect your Facebook Page to Manychat, check out this video below:

Step 2: Set up the Comment Trigger in Manychat

To start our automation when somebody comments on our Facebook posts, we need to set up the auto reply comment Facebook trigger in Manychat.

To do this, click on Automation in the Manychat dashboard and click on New Automation:

Add a New Automation in Manychat

The first step is to add a trigger to our automation by clicking on New trigger:

Add a new trigger to a Manychat flow

The trigger is the event that will start our Manychat automation and thereby will start our Messenger conversation.

Then click on Messenger and choose User comments on your post:

Manychat trigger for when a user comments on your Facebook post

And the next step is to decide to what posts it should reply. Here we can choose for a specific post or to reply to any posts.

In general, I recommend choosing for Any post, because then we just create one automation in Manychat and use that in multiple posts:

Automatically reply to any posts on Facebook using Manychat

Now, we need to decide to what words we want reply. So we can reply to any words or we reply to specific words.

Let’s say, we are a Fitness influencer and we are giving a free guide on building more muscle. Then we can ask our Facebook followers to comment “GUIDE” on our post. And once they do that, that will start the conversation in Facebook Messenger.

So we will go with Specific words and add GUIDE here:

Auto reply to Facebook comments with specific words using Manychat

And as you see, I also added some variations if people misspell the word, which is good practice.

The next thing is creating a Public Auto-Response. And this is the comment that automatically responds in the comment section of your post. This comment should instruct users to check their Messenger inbox and build excitement for your lead magnet.

So we can enable Public Auto-response in Feed and add multiple variations:

Can’t wait for you to grow more muscle, please check your inbox in Messenger!
Let’s build more muscle together, just sent a message in Messenger!

And don’t forget to check Like comments, so you will also automatically like the comment:

Set the Public Auto Response for Facebook Comments in Manychat


Step 3: Create your Facebook Bot Automation

To automatically send a message in Facebook Messenger when someone comments on your post, we need to click on Messenger as our first message block:

Add the first Facebook Messenger message after someone comments on your Facebook post

In this first message, we want to confirm the interest of the user in our lead magnet. So we will say:

{{first_name}}, are you ready to gain more muscle and take your body to the next level?

Just click the button below and I’ll send over my free guide “8 Simple Exercises To Gain More Muscle” 💪

You also need to ensure this message is set to Send as Comment Reply (at the top). This is very important that it’s set correctly, otherwise it will not work:

First message in Facebook Messenger after a comment on your Facebook post

By the way, because we are using Facebook Messenger we already know the user’s name. This means we can make the more personal by using their name right away in the conversation. And this makes Facebook Chat funnels better than landing pages, because on a landing page you should have asked for it. Now, we already know it!

The first message we send can only contain text and buttons or quick replies. If you’re thinking of using pictures or videos, that’s not possible because of Facebook rules.

Then, we can also add a button, which will appear under this message. Once someone clicks on that button, they will go further inside the conversation.

So we can add a button with “Yes, send it over!”:

Add a button to your message in Facebook Messenger

And connect this button to the next message in our conversation:

Add the next message in your Facebook Messenger conversation

Now, we want to collect the email of the user before we are giving our lead magnet. So we can add another message with:

Awesome, just one quick step to get you access!

And then add the User Input element:

Add User Input element to your Facebook Messenger message in Manychat

With User Input in Manychat, we can ask a question and store the answer to that question in a Manychat field. Then we can use that data in the rest of our Manychat automations.

To get the email address of the user, we can ask “What email do you want your free guide sent to?” and set the Reply Type to Email:

Ask for someone's email in Facebook Messenger using Manychat

By setting the Reply Type to Email, Manychat validates the entered email address. If the user answers with a wrong email, Manychat will ask the user to try again with a different one.

Important: Every time we ask someone’s email in the Messenger conversation, automatically a bubble pops-up with the email address that is associated with the Facebook profile. So this means that users don’t need to type in their email, they can just click on the bubble. This highly increases your conversion compared to landing pages!

Next, we need to remove the Skip button text, so people cannot skip this crucial step:

Remove the skip button from the user input, so people cannot skip this question

Once the email is collected, we can give a link to the lead magnet directly in the conversation. To do this, we create a new message with:

You’re all set, {{first_name}}!

Can’t wait for you to grow your muscles using my 8 simple exercises 💪

Just click the button below to get instant access 👇

And a button that will go to your website:

Deliver the lead magnet in your Facebook Chat Funnel

Now, your complete Auto Reply to Comments Funnel should look like this:

Auto Reply Facebook Comments funnel in Manychat

To activate your automation, click on Set Live in the top-right corner:

Set your automation live in Manychat

Now, your funnel is live and you can test it by commenting on one of your Facebook posts with the specified keyword to ensure the funnel works as intended.

Free Facebook Comment Bot Template

Ready to take your Facebook engagement to the next level and generate more leads, on auto-pilot? Get my free template below!

By using my template, you will save hours of work and help you automate your Facebook interactions seamlessly.

Click the link below to download your free template now and watch your Facebook page transform into a lead-generating powerhouse!

Download “From Facebook Comments to Leads Template” Now!

Tips for Using Auto Reply Bot for Facebook Comments Effectively

When using an auto reply bot for Facebook comments, follow these best practices to maximize effectiveness while maintaining that human touch:

Align Automation with Your Facebook Post

Your automated comments should be directly related to your Facebook post. For instance, if the post promotes a video you made, the automated response should be, “Would you like access to the video?”

This alignment between the post and the auto reply bot for Facebook comments prevents confusion, which is great.

For instance, if your post is about a video you made, but the first message is “Hey! How can I help you?” – this is misalignment and it will hurt your conversions.

Prompt Action with Engaging Replies

When someone comments on your post, your automated reply should  guide them on what to do next. It’s not enough to just acknowledge them.

For example, if the comment is on a promotional post, the reply could be, “Click the link to grab your free ebook now!”

A clear call-to-action can significantly improve engagement and conversions.

Be Concise and To the Point

Keep your automated comments concise and focused. If a user is interacting for a specific offer, e.g. a discount code or a downloadable resource, provide it directly in your response.

Always reduce the steps required as much as possible. This leads to better user experiences and better conversions for you.

Maintain a Conversational Tone

This isn’t a university lecture. Craft your automated replies in a conversational tone:

  • Use active voice to make the interaction feel dynamic.
  • Opt for simple, commonly understood words.
  • Keep your messages short, ideally under 300 characters, to retain the reader’s attention and encourage a response.

Monitor and Adjust Based on Feedback

Keep an eye on the interactions with your automated comments. This helps you quickly spot any misalignments or issues in the automation.

You’ll be able to make necessary adjustments to improve accuracy and appropriateness.

Frequently Asked Questions

Can you auto comment on Facebook?

Yes, you can automatically reply to Facebook comments by using platforms like Manychat.  When someone comments on your post, you can auto reply to that comment and start an automatic conversation in Facebook Messenger. There are 3 steps:

What is a Facebook comment bot?

A Facebook comment bot is a program that automatically replies to comments on Facebook posts. Comment bots are used to get more Facebook engagement and turn Facebook followers into loyal buyers.

How do I automate a comment reply on Facebook?

You can automate a comment reply in 3 easy steps:

How do I get auto comments on Facebook?

You get auto comments on Facebook by using tools like Manychat. By using the Comment Reply, you can auto reply to any comment and start an automatic conversation in Facebook Messenger.

How to set up auto reply on Facebook Comments?

You can reply to comments on Facebook automatically. Likewise, you can also start a conversation in Facebook Messenger. There are only 3 steps required:

How do I add an auto comment on a Facebook post?

With tools like Manychat, you can automatically reply to each comment on a Facebook post and start a conversation in Facebook Messenger. You can do this in 3 simple steps:

How do I auto comment on a Facebook Group’s post?

Unfortunately, it’s not possible to automatically comment on a Facebook Group’s post, because of Meta policies.

How to create a Facebook Comment Like Bot?

You can automatically like a comment reply in 3 simple steps:

  1. Create a Free Manychat account and connect it to Facebook
  2. Set up the Auto Comment Trigger to Facebook Posts in Manychat (and make sure you like the comment as well!)
  3. Create your Facebook Bot Automation

Can you auto reply to comments on a personal Facebook profile?

No, it’s not possible to auto reply to comments on a personal Facebook Profile: you can only set it up for Facebook Pages.

What Are Automated Replies For Facebook Comments?

Automated replies on Facebook are quick, private messages sent to people who comment on your posts. They help you respond faster to comments, keeping your audience engaged.

How does a Facebook Auto Reply Comment Bot work?

Facebook comment bot detect new comments on your posts and respond with a pre-set message. You can customize these messages based on keywords or specific triggers.

Can I customize the auto replies sent by the bot?

Yes, you can customize the replies to align with your brand’s voice, respond to specific keywords, or address frequently asked questions.

Is using a Facebook Auto Reply Comment Bot beneficial for my business?

Absolutely! It enhances customer engagement, ensures timely responses, and can help in filtering and managing large volumes of comments.

Will the bot reply to every comment on my Facebook post?

You can set it to reply to all comments or only specific ones based on keywords or other criteria you define.

Is it difficult to set up a Facebook Auto Reply Comment Bot?

Not at all. Many platforms offer user-friendly interfaces to set up and manage your auto-reply bot without needing technical expertise.

Are there any risks associated with using a Facebook Auto Reply Comment Bot?

If not managed properly, it might lead to generic or irrelevant responses. It’s important to regularly review and update your bot’s settings and responses.

What types of comments should I set the bot to respond to?

It’s wise to configure the bot to respond to common queries, positive feedback, and general comments that don’t require a detailed response. For complex queries or negative feedback, you might set the bot to initiate a conversation and then hand it over to a human team member for a more personalized approach.

How does an auto-reply bot manage spam or irrelevant comments?

Most auto-reply bots have features to filter out spam or irrelevant comments. You can set keywords or phrases that the bot should ignore or flag for review. This helps in maintaining the quality of interactions on your page and reduces the workload of manually sorting through comments.

Can the auto-reply bot handle multiple languages?

Yes, many auto-reply bots support multiple languages. You can set up different responses for different languages, ensuring that your audience receives replies in their preferred language. This feature is particularly useful for businesses with a global audience.

How do I measure the effectiveness of my Facebook Auto Reply Comment Bot?

You can track metrics such as response time, engagement rate, and customer satisfaction scores. Many chat automation platforms provide analytics to help you understand how well your bot is performing and where improvements can be made.

What are the best practices for crafting auto-reply messages?

When crafting auto-reply messages, it’s important to be concise, friendly, and helpful. Ensure that your messages align with your brand’s voice and tone. Avoid overly robotic language and include calls-to-action where appropriate. Regularly updating your messages to reflect current promotions, events, or frequently asked questions can also keep your interactions fresh and relevant.

What is the auto comment reaction on Facebook?

The auto comment reaction on Facebook allows you to start a conversation in Messenger with any user commenting on your Facebook post. Additionally, you can also automatically reply to their comment in the comment section.

Can you auto reply to Facebook Comments?

Yes, using tools like Manychat you can auto reply to Facebook Comments. When someone comments on a post, you can automatically reply to that comment and start a conversation in Facebook Messenger.

Comments (4)

  1. Joop Logger

    Hi Joren,
    great explainer!
    I have used ManyChat before but after viewing your explainer I will use it again for a new business I started.

    I have a question though. I post my artwork (i sell my AI generated artwork as posters and canvas worldwide – in FB groups and receive tens of thousands of likes and comments… CAN I AUTO REPLY IN A FB GROUP?

    Thanks in advance for your reply

    Joop Logger

    1. Joren Wouters

      Thank you, Joop! Unfortunately, you cannot automatically reply in a Facebook Group, because of Facebook’s restrictions.

  2. Lisa

    Thanks for this tutorial. I find that I rarely look at people’s pages, just their profiles.

    Are there ways of increasing views of my new page organically?

    1. Joren Wouters

      Hey Lisa! Yes, you can. My advice = Provide free value and ask for engagement. Those two tactics are key to getting more views organically.

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