Instagram comment-to-DM: send your link to everyone who comments

What comment-to-DM is

You post a Reel and say “comment LINK and I'll send it to you.” Every comment that contains the keyword gets a DM from your account a few seconds later, and usually a short public reply under the comment so everyone scrolling sees it working.

Creators use it for lead magnets and affiliate links, shops for product links and discount codes, coaches for booking pages. It replaces “link in bio” for anything you promote in a single post.

Why it beats “link in bio”

“Link in bio” asks people to leave the post they were enjoying, find your profile, tap a link page and hunt for the right link. Comment-to-DM brings the link to them, in the app they're already using.

Two more things happen that a bio link can't do. Every keyword comment is a comment, which tells Instagram the post is getting engagement. And the person who commented now has a conversation with you in their inbox, so a follow-up question or offer has somewhere to go.

The unanswered “link?” under your Reel is a sale you already paid for with content.

What Instagram allows

Approved DM automation on Instagram goes through Meta's Instagram API, and Meta sets clear limits on when a business may message someone. Tools that ask for your password and drive the app like a person skip those limits and Meta's approval altogether, which puts your account at risk.

That's why good comment-to-DM flows start with a short message and a reply button rather than a bare link. Tapping a reply button sends a response your account can see, so the link and any follow-up can go out in the 24 hours after it. A tap on a plain link button never reaches your automation, so it can't start that clock. We cover the full rule set, with Meta's own wording, in Instagram DM automation rules.

Set one up in 5 steps

Pick a keyword that matches

Most matchers, ours included, look for the keyword as a whole word and ignore capital letters. That means “LINK please” matches and “linked” does not. Try it:

Good keywords are short, specific to the post and easy to type on a phone:

• One word, no spaces. GUIDE beats “send guide”.
• Tied to the offer. RECIPE, SIZE, BOOK tell you what they want and keep different posts apart.
• Not a word people say anyway. “love” or “wow” will fire on every compliment.

Need ideas? We collected comment keywords by niche, with what each DM should send.

Write the DM that gets the tap

The first message decides whether the link ever gets opened. Keep it short, say what's coming, and give one button that says exactly what happens when they tap it.

Mistakes to avoid

• Using a tool that wants your password. If it doesn't send you to Instagram's own login screen, it isn't using the official API.
• Promising the link and not saying the keyword. If the keyword isn't in the caption, people guess, and guesses don't match.
• The same public reply 300 times. Rotate a few variants.
• Making a follow the price of the link. Meta's Spam policy counts requiring a follow to get content as like/share-gating. Send the link, then invite the follow.
• Ignoring replies. People answer automated DMs with real questions. Read them.

What to measure

Three numbers tell you whether a comment-to-DM post worked:

1. DMs sent: how many people asked. This is the demand for what you offered.
2. Button taps: how many opened the conversation. Low? Your opener is too long or vague.
3. Link clicks: how many got to your page. Low against taps? Your link message or button label is the problem.

DMFa.st shows sends and clicks for each automation, a funnel from comment to click across your account, and the reason any DM was skipped, so you can tell a bad keyword from a bad message.