Facebook Comment Autoreply

Fuely AI replies to comments under your Facebook Page's posts — publicly under the comment, in a private Messenger message, or both. Comment replies are handled by the Posts automation source. For the full picture of Facebook sources, see Facebook automations.

How comment automations are organized

The Posts source has a base automation — the permanent catch-all. It starts off; turn it on and Fuely AI answers every comment under your posts, using your instructions and Knowledge Base. All comment replies also need Main bot turned on: it is the master switch, and while it is off Fuely AI answers no comments at all.

On top of the base, the source takes up to 30 custom automations — named rules for specific cases. A new custom automation starts off and replies only after you turn it on. A rule can target:

• Keywords — react to comments matching a word exactly, containing it, not containing it, or to any comment at all (up to 50 keywords per rule)
• A list of posts — only comments on the posts you pick, up to 50 per rule; leave the list empty and the rule covers every post on the Page

Every comment rule — base or custom — controls two replies you can enable independently:

• Public reply — the visible answer under the comment: written by the AI, or a fixed text you set
• Private reply — the Messenger message sent to the commenter

Which rule answers a comment

When several rules could match, Chatfuel picks exactly one, in priority order: rules targeted at specific posts first, then general custom rules, then the base automation. Within those, an exact keyword match beats a contains match, which beats an any-comment rule. Rules that are turned off never compete.

To make a rule deliberately leave the comments it matches unanswered, set both its Public reply and Private reply to Don't reply — for example, keeping the AI quiet on one post while the base automation keeps answering everywhere else. Setting Incoming messages to Don't reply is not enough for comments: a fixed-text public or private reply still goes out. AI-written replies stop, though — and they also pause during your working hours if When AI replies is set to Outside working hours.

If the commenter then writes to you in DMs, the comment automation that replied keeps answering them with AI, following its own Incoming messages, When AI replies and other settings, until about a day passes after its last reply. If you turn that automation off, the base automation of the comments source answers instead, if it's on. When the settings keep the AI quiet — Incoming messages is Don't reply, or it's within working hours and When AI replies is Outside working hours — the AI hands the chat to your team; your direct-messages automation does not step in. After that day, DMs go to the direct-messages automation, if it's on.

Set it up in Automations

1. Go to Fuely AI → Automations.
2. Check that Main bot is on — without it, no comment gets a reply.
3. Under Facebook, open Posts.
4. Turn on the base automation to answer every comment, or add a custom automation and set its keywords or list of posts. Picking specific posts requires a connected Facebook Page; everything else can be set up before connecting.
5. Set the Public reply and Private reply, and adjust Additional instructions if you want a specific tone or goal.
6. If you added a custom automation, turn it on — it starts off.
7. Try it in the Test chat sidebar before going live.

Or ask the AI Co-Worker

Tell it what you want in chat:

"When someone comments PRICE under my Facebook posts, reply publicly and send them the price list in Messenger."

It applies the change and confirms what it set. If your Page isn't connected yet, it sets everything up first and takes you to the connection step at the end.

How to reply only under chosen posts

To answer comments only on the posts you pick, you need three things:

• Main bot is on.
• A custom automation with a List of posts, turned on.
• The base automation of the Posts source is off — or on, with its Public reply and Private reply set to Don't reply. If the base stays on and answering, every other comment under your Page's posts gets a reply too.

A custom automation inherits its replies from the base, so when the base is set to Don't reply, set the custom automation's own Public reply and Private reply.

Tips for writing instructions

• Be specific about your tone and style.
• State your goal — drive people to Messenger, answer questions, share a link.
• Include examples of what you want Fuely AI to say. It can include links in both public replies and Messenger messages:

If the comment says EBOOK, send this link: chatfuel.com/ebook

When someone asks about pricing, share our pricing page: yoursite.com/pricing

Important notes

Messaging limits

Messenger limits how you can message people after a comment:

• After a comment — one private reply per comment, sent within 7 days of the comment. Further messages wait for the person to reply in Messenger.
• Existing contacts — 24-hour window to message after their last message.

Where private replies end up

• People who have messaged your Page before — the message goes to their Messenger inbox.
• People who only commented — the message may land in their message requests folder, with no notification.

To help new commenters find your message, add a public reply that points them to their inbox:

Thanks for your comment! Just sent you a message.

Appreciate your interest! Check your Messenger inbox.