--- title: "Facebook Comment Auto Reply: Set It Up the Right Way | Karobar" url: https://karobar.io/guides/facebook-comment-auto-reply language: en description: "How to auto reply to Facebook comments by DM and in public: Meta's one private reply rule, Business Suite's free option, and keyword or topic matching." --- Guide # Facebook comment auto reply: how to set it up the right way Meta's rules, the free Business Suite option, and comment replies that never look like spam. Updated 15 October 2026 · 4 min read A busy Facebook post can collect hundreds of comments asking the same things: price, delivery, "DM me". Answering each one by hand takes hours, and every hour a buyer waits is a chance they buy somewhere else. A Facebook comment auto reply answers those comments for you, in public, by private message, or both. This guide covers the rules Meta sets, what Meta Business Suite offers for free, and how to set up comment replies in [Karobar](https://karobar.io/features/comment-auto-dm) that sound like you and never spam your customers. ## The rules Meta sets for replying to comments Meta lets a Page send a **private reply** to someone who commented on its post, but only one per comment, as described in the [Messenger Platform policy](https://developers.facebook.com/documentation/business-messaging/messenger-platform/policy). You cannot send a second private message off the same comment, and you cannot message people who never commented or wrote to you. That single message is the door to the conversation. Once the person taps a button in it or writes back, the chat opens in your inbox and you can keep talking normally. So the private reply does not need to close the sale; it needs to get one tap or one answer. ## What Meta Business Suite offers for free Meta Business Suite has [inbox automations](https://www.facebook.com/business/help/395965998733706), including **comment to message**: a private message sent in reply to comments that contain keywords you choose. Meta's [setup guide](https://www.facebook.com/business/help/318238182723007) notes a few limits: - It is set up on a computer. - Keyword automations take a handful of keywords and only fire on an exact match. - Some automations may not be available, depending on the channels you connected. That is enough for one simple keyword. It gets harder when buyers write the same question twenty different ways, in English, Urdu and Roman Urdu, or when you want a public reply under the comment too. ## How to set up a comment auto reply in Karobar, step by step Connect your Facebook Page first (see [Connect Instagram and Facebook](https://karobar.io/help/connect-instagram-and-facebook)). Then open **Automations**, go to **Comment to DM** and create a new automation, or start from a **preset** for the comments sellers get most. The builder has four steps: 1. **When.** Choose which comments it answers: comments with words you list, comments about a topic you describe in your own words (such as "asking the price, or saying DM me"), or every comment. Pick the posts it covers: one post, several, or any post. 2. **Reply.** Choose **Send my message** (you write it once and it goes out automatically) or **Karobar AI writes it, I approve** (a draft waits in your inbox). Add a public reply under the comment if you like. 3. **Test.** Type a comment someone might leave, or tap an example, and see whether it would fire. Nothing is sent. 4. **Name and switch it on.** Check the name, then turn it on or save it switched off. You can also add an automation to a single post while you write it, from the **Automations** step of the composer. See [Create and schedule a social media post](https://karobar.io/help/schedule-a-social-media-post#automations). ## Exact words or topics: which comments to answer | Match by | Best for | Cost | | --- | --- | --- | | Exact words | Short, predictable comments: PRICE, LINK, SIZE. | Free | | Topic in your own words | Questions people phrase in many ways: "kitny ka hai", "how much?", "rate?". | A few AI credits | | Every comment | A giveaway or a launch post where you want to thank everyone. | Free | Topic matching understands English, Urdu and Roman Urdu, however people spell it. Comments with your exact words still get a reply straight away, without waiting for the AI. When a comment matches more than one automation, exact words win first, then the one higher in your list; drag them to change the order. One comment always gets one reply. ## Write a private reply people tap - **Greet them by name.** "Hi {name}!" is filled in for each person. - **One clear action.** A link button such as "Shop now" or "See sizes" works better than a paragraph. - **Answer the question.** If they asked the price, give it, or say exactly where to find it. - **Sound like a person.** Short sentences, your usual tone, an emoji if that is how you talk. For the public reply, add up to three versions such as "Sent you a DM!" and "Check your inbox 📩". They take turns, so a busy post does not fill up with the same line. If you prefer to answer price questions in public, Karobar AI's comment settings let you choose between giving the price in the comment and replying in a private message; see [Turn on AI reply drafts](https://karobar.io/help/turn-on-ai-reply-drafts). ## Limits and timing that keep it friendly Each automation has **Limits and timing**: a maximum number of DMs a day, a rule that the same person is never messaged twice within a set number of hours, and optional hours when it is allowed to send. These protect your Page from looking like spam, and protect customers who comment twice from getting two messages. ## Facebook and Instagram are not quite the same - Comment automations work on both Facebook and Instagram posts, from the same list. - Story replies and story mentions can start a DM on Instagram. Facebook does not pass replies to a Page story to apps, so they cannot. - The ideas for Instagram, with keyword examples, are in [Instagram comment to DM](https://karobar.io/guides/instagram-comment-to-dm). ## Measure what it brings in The automations list shows how many DMs were sent, how many AI drafts were prepared and how many public replies went out. Chats that began with a comment say **Started from a comment** in the inbox, with a link back to it, so you can see which posts bring real conversations and orders. ## Mistakes to avoid - **One keyword only.** People write "price", "Price?", "rate" and "kitny ka". Use a topic, or list the common versions. - **A wall of text in the DM.** The first message should get a tap, not explain everything. - **The same public reply fifty times.** Add versions so the comments look looked after. - **Never testing.** Try real comments in the test step before you switch it on. - **Automating complaints.** An angry comment needs a person. Keep automations for questions and requests. ## Sources Facts about other companies and platforms come from their own pages, checked on the dates shown. Plans and prices change; check the source before you decide. 1. [Meta for Developers: Messenger Platform policy (private replies)](https://developers.facebook.com/documentation/business-messaging/messenger-platform/policy) (checked 2026-10-15) 2. [Meta Business Help Centre: About Inbox automations in Meta Business Suite](https://www.facebook.com/business/help/395965998733706) (checked 2026-10-15) 3. [Meta Business Help Centre: Set up Inbox automations in Meta Business Suite on desktop](https://www.facebook.com/business/help/318238182723007) (checked 2026-10-15) FAQ ## Questions? Answers. Any other questions? [Ask support](https://karobar.io/support). ### Can I auto reply to Facebook comments for free? Yes. Meta Business Suite has a comment to message automation for exact keywords. In Karobar, exact-word automations use no AI credits; topic matching and AI drafts use a few. ### How many messages can I send to someone who commented? Meta allows one private reply per comment. When the person replies or taps a button, the conversation opens and you can keep chatting. ### Can the auto reply be in Urdu or Roman Urdu? Yes. Write your reply in any language. Topic matching in Karobar understands comments in English, Urdu and Roman Urdu. ### Will Karobar AI reply to comments on its own? Only with the words you wrote, when you choose Send my message. If you choose Karobar AI writes it, the draft waits for you to approve it. Keep going ## What to look at next [Comment to DM: a private message for everyone who comments When someone comments on your Instagram or Facebook post or Reel, Karobar sends them a DM with your link. Publ… Learn more](https://karobar.io/features/comment-auto-dm)[Comments from five networks, in one inbox Comment management for Facebook, Instagram, TikTok, LinkedIn and YouTube in one place. Reply, hide or delete, … Learn more](https://karobar.io/features/comments-engagement) ## More guides - [How to schedule Instagram posts, Reels and Stories Instagram's own scheduler, when you need more, and a week of posts planned in one sitting. Read the guide](https://karobar.io/guides/schedule-instagram-posts) - [Instagram comment to DM: how to turn "price?" comments into sales Answer buyers who comment with a private message, a link and a follow-up, while keeping prices out of public view. Read the guide](https://karobar.io/guides/instagram-comment-to-dm) - [How to moderate comments on Instagram, Facebook, TikTok and YouTube Decide what to hide, answer or move to a DM, and get through busy comment sections without missing a buyer. Read the guide](https://karobar.io/guides/moderate-social-media-comments) - [How to schedule TikTok posts, from videos to photo posts TikTok's built-in scheduler, its limits, and the settings to check on every post. Read the guide](https://karobar.io/guides/schedule-tiktok-posts) ## Try it on your own shop 7 days free, no card needed. Connect Instagram, TikTok or WhatsApp and see your own messages in one inbox. [Start free trial](https://karobar.io/login?trial=1&login=1)