Comment-to-DM on a post or reel
The workhorse campaign. Someone comments your keyword on a post or reel and gets your DM seconds later. It is on the free plan and it is where almost everyone should start.
This is the campaign type most creators mean when they say Instagram automation. You put a keyword in a caption, people comment it, and each one gets a DM without you touching your phone.
Choosing the post
Step 1 is Select a Post or Reel. Pick the single post the automation should watch. There is an Any post or reel switch which extends it to everything you have published and everything you publish in future — powerful, but it means every stray comment anywhere on your profile can trigger a DM. Start with one post.
Choosing the keyword
- •One word. GUIDE, LINK, PLAN. Phrases get mistyped and mistyped comments do not match.
- •No punctuation and nothing that autocorrect will rewrite.
- •Avoid a word that appears in normal conversation on your posts, or ordinary comments will trigger it.
- •The Any keyword switch fires on every comment. Useful for a giveaway, noisy for anything else.
The public reply
Step 3 posts a short public reply under their comment. It is worth turning on: everyone scrolling sees the automation worked, which pulls more people into commenting. There is a limit you can set so a busy post does not fill with identical replies.
Re-triggering people who already commented
If you set a campaign up after a post has been running, the people who commented earlier are not lost. Re-trigger sweeps back over past comments and sends them the DM too.
| Rule | Detail |
|---|---|
| Plan | Pro only |
| Campaign | Must be Active, and a comment campaign |
| Post | Must be a specific post — not Any post |
| How far back | 1 to 7 days |
| Live campaigns | Not supported |
Instagram only lets a business reply privately to a comment for a limited window after it was posted. That is why the lookback stops at seven days rather than reaching back forever.
Common questions
How do I set up comment-to-DM on Instagram?
Create a campaign with the Comment on a post or reel trigger, pick the post, set a one-word keyword, write the DM in the Send a DM step, and set the campaign to Active. Then put the keyword in your caption and pin it as the first comment.
Can I send the DM to people who commented before I set this up?
Yes, with re-trigger. It is a Pro feature and it works on an Active comment campaign that targets a specific post, reaching back between one and seven days. It does not work on live-comment campaigns or on Any post campaigns.
Is comment-to-DM free in IGSender?
Yes. The Comment on a post or reel trigger works on the free plan, within the plan's monthly DM allowance. The follow gate, follow-up sequences and collecting details in the DM are Pro.
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