Facebook Comment-to-Messenger DM: How to Set It Up
Turn Facebook Page comments into Messenger conversations: reply publicly and send a private DM automatically when someone comments your keyword.
By The Tendrify Team · · 6 min read
Comment-to-DM is the single most effective automation on a Facebook Page. You invite people to comment a keyword on your post; the moment they do, your Page replies publicly and slides a private Messenger message into their inbox with whatever you promised — a link, a discount, a guide. It turns a passive post into a lead machine.
Why it works so well
- The public reply shows everyone that commenting gets a response, which encourages more comments and lifts reach.
- The private message does the real work — delivering your link or offer one-to-one.
- It's automatic, so it scales from a handful of comments to thousands with zero extra effort.
How to set it up
- 1Connect your Facebook Page to Tendrify.
- 2Create an automation with the trigger "User comments on your post".
- 3Choose the post to watch and set your keyword (for example, GUIDE).
- 4Write the public reply ("Sent! Check your messages 📩") and the private Messenger message with your link.
- 5Turn it on and post a call to action: "Comment GUIDE and I'll DM it to you."
Writing a call to action that converts
Be explicit about the keyword and the reward. "Comment PRICE and I'll send our full catalogue" outperforms a vague "drop a comment below". One clear keyword per post keeps the automation predictable and your audience clear on what to do.
Keep the public reply varied and friendly, and put the real detail in the private message. The private Messenger reply is sent within Meta's messaging window using the official API — the compliant way to move a public commenter into a private conversation.
Add moderation and an inbox
Because the same connection covers your whole Page, you can pair comment-to-DM with Comment Shield to auto-hide spam, and use the unified inbox to pick up any conversation a person continues after the automated message.
Frequently asked questions
Does the commenter have to follow my Page?
No. Anyone who comments can receive the private reply, within Meta's messaging rules.
Can I run it on every post or just one?
Either — target a specific post, or set it to match comments across your posts.
Will people also get a public reply?
Yes. The automation posts a public reply on the comment and sends the private Messenger message together.
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