Instagram Comment-to-DM Automation: How It Works and Free Options
How comment-to-DM automation works on Instagram, what ManyChat's free plan gives you, and a $19 a month storefront that does it with the link inside.
Instagram comment-to-DM automation watches your posts for a keyword, replies to the comment publicly, and sends that person a private message with your link, all through Meta's official Instagram API. You can run it free on ManyChat's Free plan, which covers 25 active contacts a month. Past that, ManyChat's paid plans start at $17 a month.
If the DM is there to sell something, shopspace puts comment-to-DM automation in its Creator plan next to the storefront the message links to, for $19 a month billed yearly and 0% taken from each sale.
Below: how the automation works, what the free options really cover, what ManyChat costs as of September 2026, and how to set up your first flow.
How Instagram comment-to-DM works
You choose a trigger word (LINK, GUIDE and SHOP are common) and write a post that tells people to comment it. From there the flow runs on its own:
- Someone comments the keyword.
- The tool replies to the comment publicly, usually something short like "Sent, check your DMs", so other viewers see the loop close.
- The same tool sends the commenter a private message with your link: a product page, a free download or a checkout.
Two conditions apply to every tool. Your Instagram account has to be a professional account (Business or Creator), and the tool has to be approved by Meta for the comment and messaging permissions it uses. A tool without that approval cannot send the DM, whatever its website says.
Why creators use "comment LINK" instead of a link in bio
A comment call to action asks for one small action on the post itself, and the reward arrives in the inbox a few seconds later. The alternative, "link in bio", asks people to leave the post, open your profile, find the link and pick the right item. Every one of those steps loses people.
Doing it by hand does not scale. If a post gets a couple of hundred keyword comments, sending each link yourself is hours of copy and paste, and replies that arrive a day late convert worse than replies that arrive in seconds. Automation fixes both.
Can you do Instagram comment-to-DM for free?
Yes, with limits. ManyChat's Free plan costs $0, includes Instagram, and allows up to 4 active automations and 25 active contacts a month, with ManyChat branding on your messages. That is enough to test the format on one post and see whether your audience responds.
The limit is the contact count. A post that works will pass 25 people quickly, and at that point you are choosing a paid plan. So "free" is the honest answer for testing, and the wrong answer for a post you expect to take off.
What ManyChat costs (as of September 2026)
ManyChat's pricing page shows annual prices by default. Here are both, in USD, from ManyChat's pricing page (the price depends on your billing country):
| Plan | Month to month | Billed yearly (per month) | Active contacts a month |
|---|---|---|---|
| Free | $0 | $0 | 25 |
| Essential | $17 | $14 ($168 a year) | 250 |
| Pro (includes AI) | $39 | $29 ($348 a year) | 2,500 |
| Business | $99 | $69 ($828 a year) | 7,500 |
On monthly billing, each contact past your plan's allowance costs extra: $0.10 on Essential and $0.05 on Pro. Essential and Pro come with a 14-day trial, and paid plans need a card.
The real cost: a DM tool plus somewhere to sell
ManyChat sends the message, but it is not a checkout. The link inside the DM has to lead to a page that sells, so most creators pay for two tools: a storefront and a DM tool.
The table below shows what that combination takes from you in a month at two sales levels, all on month-to-month prices. The storefront examples are Stan Store Creator ($29 a month, 0% per sale) and Beacons Creator ($10 a month, 9% per sale). If the storefront you use already includes DM automation, drop the ManyChat line and compare its price alone. Card processing (Stripe or PayPal) applies on every platform, so it is left out to keep the comparison fair.
| Setup (month to month) | Taken at $500 in sales | You keep | Taken at $2,000 in sales | You keep |
|---|---|---|---|---|
| Beacons Creator + ManyChat Pro | $94 ($10 + $39 + 9%) | $406 | $229 | $1,771 |
| Stan Store Creator + ManyChat Pro | $68 | $432 | $68 | $1,932 |
| Stan Store Creator + ManyChat Essential | $46 | $454 | $46 | $1,954 |
| shopspace Creator (storefront and DMs, 0%) | $29 | $471 | $29 | $1,971 |
Billed yearly, shopspace Creator is $19 a month ($228 a year), so you keep $481 and $1,981. The Essential row is the cheapest pairing, but 250 contacts a month runs out fast on a post that works. (Prices: Stan Store, Beacons.)
Paying for ManyChat Pro plus a $29 storefront is $68 a month before you make a single sale. Start a 7-day free trial of shopspace and run the store and the comment-to-DM flow from one place for $29 month to month, or $19 a month billed yearly.
When ManyChat is the better choice
Be honest about what you need. ManyChat is the better pick if:
- You only want DMs. If you are happy with your store and just need the automation, a dedicated chat tool is built for nothing else.
- You are still testing. ManyChat costs nothing for 25 contacts a month, while shopspace offers a 7-day trial and then a paid plan.
- You message on more than one channel. Even ManyChat's $0 tier includes 2 channels.
shopspace makes sense when the DM exists to sell your own products, because the flow, the product page, the checkout and the email follow-up then sit in one account.
How to set up comment-to-DM on shopspace
Instagram automations are on the Creator plan. The setup:
- Connect your Instagram professional account from the shopspace dashboard. The connection grants the comment and messaging permissions in one step.
- Create an automation with a comment keyword trigger. Keywords match whole words, not case, so pick one short word. "LINK" works; a phrase is easier to mistype.
- Add a comment reply step. You can write several variations and one is picked at random, so a busy post does not fill up with identical replies.
- Add a DM step with your link. Send people to a product page, a lead magnet (a free download in exchange for an email) or straight to checkout.
- Optionally wait for a reply. The flow can pause until the person answers the DM and branch on what they say.
On Pro, AI comment reading adds one more trigger: a comment like "how do I get this?" can start the same flow even though it never contains your keyword. If you want the DM to feed a longer sequence, see how to build a sales funnel for digital products.
Test before a big post goes live
A few things only show up with a real follower:
- Your own comments are ignored. The automation skips comments from the connected account, so test from a second account.
- First messages can land in Message Requests. People who have never messaged you may find the DM in their requests folder. That is Instagram's inbox filter, not the automation failing.
- Meta limits the messaging window. A business can only message someone for a limited time after they interact, so the DM should go out right away (automation does this) and later follow-ups should wait until the person replies.
Run one full test with a comment from a second account before you point a high-traffic post at the flow.
The verdict
If you want to see whether comment-to-DM works for your audience at all, start on ManyChat's Free plan and test one post. Once it works and you are selling, the question changes: you are now paying for a DM tool and a storefront, and the table above shows what that combination costs every month.
If the DM leads to your own products, run both from one account. Try shopspace free for 7 days: a card is required at signup and nothing is charged during the 7 days. You get the storefront, comment-to-DM and email follow-up on Creator, with 0% taken per sale. For more ways to turn followers into buyers, read the best Linktree alternative for selling products and how to build an email list as a creator.