Instagram posts
Attach the automation to a feed post. Commenters on that post get the DM. You can also arm upcoming post automation so keywords are live from the first comment of a launch, not twenty minutes later.
Instagram comment to DM
Turn Instagram Comments Into Automatic DMs
Someone comments on your post or Reel. CommentLink detects it, can reply in public, sends a private DM, optionally asks them to follow, then shares the link you set.
Free to use · No credit card · Instagram Business or Creator account
app.commentlink.co / inboxExample
Nidhi commented “price” on Summer drop is live
Hey Nidhi! 👋 You asked about the tan one — here it is.
Tan Tote₹2,450 · Back in stockyourstore.com/tan-tote
Ordering now, thanks!
Delivered · Seen
The idea
What is Instagram comment-to-DM automation?
Instagram comment-to-DM automation is a simple swap: instead of leaving a link in your bio and hoping people find it, you ask them to comment a word. That comment becomes the reason you are allowed to message them. The DM can carry the product page, the booking link, the price list, or the lead magnet — the thing you could not fit in a caption.
It is not the same as blasting people who never talked to you. CommentLink only starts after a real comment on a post or Reel you connected. Sending goes through Meta's official APIs and stays inside their rate limits. You still need a Creator or Business account linked to a Facebook Page.
If you mainly want the public thread to look active, start with Instagram auto reply. If you want the private follow-up and the link, this page is the workflow.
How CommentLink works
Comment → DM → link, in one automation
You configure it once on the post. Every matching comment runs the same path.
- 1
Someone comments
A person comments on your Instagram post or Reel — often a keyword you put in the caption, like “link”, “price”, or “guide”.
- 2
CommentLink detects it
The comment arrives through Meta's official Instagram Graph API. If it matches your trigger (a keyword, or every comment), the automation starts.
- 3
Public reply (optional)
If you switched on automatic public replies, CommentLink posts a short reply under the comment so the thread still looks alive.
- 4
Private DM
The same person gets an Instagram DM with the message you wrote — text, a button, a product card, or a question.
- 5
Follow-gate (optional)
If you turned on a follow-gate, the first DM asks them to follow and tap I'm following. The link waits until that check passes.
- 6
The link goes out
Once the steps you configured are done, they get the product URL, lead magnet, booking page, or discount you set.
Keyword triggers
Reply to a word — or to every comment
Most campaigns use a short keyword people already type: link, price, info, guide, book, yes. Put that word in the caption and say it in the video. When the comment contains it, the DM fires. You can run different keywords to different messages on the same account.
Keywords are optional. For a giveaway or a launch where people comment anything, set the automation to catch every comment. That is still comment-to-DM — there is just no filter.
Posts and Reels
Same workflow on feed posts and Reels
Instagram Reels
Reels comments use the same triggers and messages. Reels are usually where new people arrive, so this is often where comment-to-DM pays for itself — they never visited your profile, and the DM still hands them the link.
Feed post
Comment on the post, DM with the product link.
Reel
Same keyword, same DM, on the format that travels.
Public replies
Automatic public replies, if you want them
A comment-to-DM tool that only DMs can leave the public thread looking ignored. CommentLink can post a public reply on the comment as well — “sent you the link” — so other people still see activity. That reply is optional and separate from the private message.
You can rotate a few public reply lines so the thread does not repeat the same sentence. For the difference between what everyone sees and what only the commenter sees, read Instagram auto reply.
Follow-gate and links
Hold the link until they follow — or just send it
Follow-gate
Optional. The first DM asks them to follow and tap I'm following. CommentLink then checks follow status through Meta's API. It does not silently detect a follow with no tap. Details on the Instagram follow gate page.
Link sharing
The DM can include a URL, a button, a product card, or a file you attach. You can also ask for an email or phone number first, then send the link — so the comment becomes a contact, not only a click.
Use cases
Where comment-to-DM is the right tool
Shops and product links
Caption says comment “link”. The DM sends the product URL so people are not hunting your bio.
Price lists
Comment “price” and the DM returns sizes, colours, and a checkout link instead of a public price war in the comments.
Lead magnets
Comment “guide” and collect an email in the DM before you send the PDF — a list you actually own.
Launches and drops
Arm keywords before the post goes live so the first hour of comments still gets a DM.
Setup
Three steps to the first automated DM
Connect Instagram
Sign up and connect a Creator or Business account through Meta's login. CommentLink never asks for your password.
Pick the post and trigger
Choose a live post or Reel, or arm an upcoming one. Set keywords, or reply to every comment.
Write the DM and go live
Add the message, optional public replies, follow-gate, and link. Switch the automation on.
FAQ
Comment-to-DM questions
It is a workflow where a comment on your Instagram post or Reel triggers a private DM. CommentLink can also post a public reply on the comment, then send the message, optionally ask the person to follow, and deliver the link you set.
Yes. The same keyword triggers and messages work on Instagram posts and Reels. Reels usually bring newer people, so many shops run the same automation on both.
Yes. Turn on a follow-gate. CommentLink DMs them first, they tap I'm following, then CommentLink checks follow status through Meta's Instagram Graph API before sending the link.
Yes. Meta only allows messaging automation on Creator or Business accounts linked to a Facebook Page. Personal accounts cannot use this — that is a Meta rule, not a CommentLink limit.
Yes. CommentLink is free to use with no card. Instagram messaging has no per-message fee from Meta. Sending still stays inside Meta's rate limits.
Keep reading
Related guides
Start sending DMs from comments
Connect Instagram through Meta's login, pick a post and a keyword, and switch it on. Free, no card.