Messenger auto reply with the Mujib AI agent for your Facebook Page
Messenger auto reply with Mujib means the agent reads the messages that reach your Facebook Page and answers them from your knowledge base, handing the conversation to your team when needed. You connect the Page once from the Channels page, and its messages land in the Mujib inbox beside WhatsApp and Instagram.
The connection steps are in Connect Instagram and Messenger. This page covers what happens after that: what the agent understands, the 24-hour rule, and what to do when the connection stops.
What do I need for Messenger auto reply?
Section titled “What do I need for Messenger auto reply?”A Facebook business Page that you manage, and a subscription that includes Messenger.
- A Facebook Page: Requires a Facebook Business Page. Mujib connects to the Page, not to your personal profile, and one Page connects to one workspace only.
- A role in Mujib: the owner, admins and team accounts that hold Manage channels can connect or disconnect channels.
- Your subscription: whether Messenger is included depends on it; when it is not, a note sits where the connect button would be.
What does the agent understand in Messenger messages?
Section titled “What does the agent understand in Messenger messages?”The agent understands text, voice notes and photos, and records everything else in the conversation for you to see.
| What the customer sends | What happens |
|---|---|
| A text message | The agent reads it and replies |
| A voice note | It is turned into text you see in the inbox, and the agent answers it in text |
| A photo | The agent understands what is in it and replies |
| A video or a file | It is recorded in the conversation for you to see; the agent does not watch or read it |
| A location the customer shares | It shows on a map in the inbox, and the agent knows the customer shared their location |
| A message from an ad that opens Messenger | The agent knows which ad the customer came from. See Ads and stories |
The agent replies in text, and it can send an image from your media library, or a map link to a branch when the customer asks where it is.
What is the 24-hour window on Messenger?
Section titled “What is the 24-hour window on Messenger?”Meta lets a Page reply to a customer within 24 hours of that customer’s last message; after that it refuses ordinary messages until the customer writes again.
- The agent’s replies: the agent answers as soon as the customer’s message arrives, so it is always inside the window.
- Your team’s replies: the inbox tells you before you type whether a reply is still possible. When the window has closed, Mujib refuses the send instead of letting it fail at Meta, and the customer has to write first.
- A customer who never messaged the Page: Meta does not let the Page start the conversation, even if that person commented on your posts.
- Appointment reminders: a reminder goes out on Messenger when it falls inside the window; otherwise it is not sent.
- Campaigns: not available on Messenger; they run on WhatsApp only.
Details and fixes are in The 24-hour window.
Does the agent answer comments on my Page?
Section titled “Does the agent answer comments on my Page?”Yes, with a private message to the person who commented, when you turn that on from the Comments page. A public reply under the comment is available on request.
- A private reply to a comment does not open the 24-hour window; the window opens when the customer answers that message.
- When you choose a reaction for a kind of comment, Mujib likes the comment on Facebook; that does not need public replies to be enabled.
- You choose what happens to each kind of comment. See Comment auto reply.
What happens if I reply from the Page inbox?
Section titled “What happens if I reply from the Page inbox?”The agent stops replying in that conversation, just as when you reply from your phone on WhatsApp. Your reply reaches the Mujib inbox, and other conversations are not affected. See Your reply pauses the agent.
To stop the agent on all of Messenger, use the Replies & agent strip in the Facebook Messenger card: turn Auto-reply off, and messages go to Inbox for your team to answer.
What do I do when the Page connection has a problem?
Section titled “What do I do when the Page connection has a problem?”The Facebook Messenger card shows Connected — with an issue with the reason. Some reasons clear by themselves; others need a reconnect.
| Reason shown on the card | What to do |
|---|---|
| The connection to your Page has expired | Press Reconnect the Page. This happens, for example, after a Facebook password change or when permissions are removed |
| The permissions granted are incomplete | Press Reconnect the Page and approve every permission asked for |
| This customer no longer receives messages from your Page | Nothing. The connection is fine, and messages to other customers go through |
| Meta is temporarily limiting how many messages go out | Wait a little; sending resumes by itself |
A connected card also has three useful buttons:
- Check the connection now asks Meta right now whether the connection works.
- Update Meta permissions grants Mujib new permissions without disconnecting; in the Facebook window choose Edit settings, then the same Page.
- Disconnect stops receiving and answering the Page’s messages, and stops the Instagram account linked to it too. Past conversations stay in the inbox, and Mujib deletes the Page access token it stored.
What are the agent’s limits on Messenger?
Section titled “What are the agent’s limits on Messenger?”On Messenger, Mujib follows Meta’s rules. These are the main limits:
- It does not start conversations: the Page answers people who wrote to it, and does not message anyone who has not.
- No voice replies: the agent answers voice notes in text.
- No delete for everyone: the delete-for-everyone option is not offered on Messenger; it is on WhatsApp only.
- No bulk campaigns: campaigns run on WhatsApp only.
Frequently asked questions
Do I need a Facebook business Page?
Yes. Mujib connects to a Facebook Page you manage and answers the messages that reach it. It does not connect to a personal profile.
Does the agent reply after 24 hours have passed?
The agent replies as soon as a message arrives, so it is always inside the window. Messages that go out later, such as a late staff reply or an appointment reminder, follow Meta's window.
Does the agent reply with voice notes on Messenger?
No. The agent understands a voice note the customer sends, but it answers in text. Voice replies are available on WhatsApp only.
Can I send a bulk campaign on Messenger?
No. Campaigns in Mujib run on WhatsApp only, and Meta's rules do not let a Page message customers outside the 24-hour window.
What happens if I change my Facebook password?
The connection may expire, and the card then shows a connection issue. Press “Reconnect the Page” and approve the permissions.