Core Feature · Updated September 7, 2026
Comment-to-DM.
Sub-second delivery.
Comment to DM Instagram — Direct Answer
Comment-to-DM automation lets someone comment a keyword on your Instagram Reel or post → they automatically receive a Direct Message. You can set it up free with ReplyKaro.
Requirements
- • Instagram Business or Creator account
- • A tool that connects through Instagram's official login (such as ReplyKaro)
- • A post or Reel to attach the keyword trigger to
How to Set It Up (Free)
- Sign up at replykaro.com — Free Forever plan, no credit card
- Connect your Instagram account via Meta OAuth (30 seconds)
- Select your Reel or post
- Set a keyword trigger (e.g. LINK, PRICE, FREE)
- Write your DM → go live
ReplyKaro free plan
1 Instagram account, 3 active automations and 1,000 DMs a month, with Follow-Gate and Fan Mode. Paid plans start at $3 a month (₹99 in India).
Other tools' free plans are listed with sources on the alternatives page.
How Comment-to-DM Actually Works
Four steps. Under one second total. Powered by Meta's official Instagram Graph API + ReplyKaro's Redis-backed event queue.
1. Follower comments
Your follower types your trigger keyword (e.g. ‘LINK’, ‘PRICE’, ‘START’) under your Reel, Post, or Carousel.
2. ReplyKaro detects in <1s
Our Meta Graph API webhook fires the moment the comment lands. We match the keyword against your active automations.
3. DM lands instantly
Your pre-set DM (link, discount, PDF, voice note) is delivered to the commenter's Instagram inbox in under 1 second.
4. Engagement compounds
Instagram sees the comment + DM open + click signal — the Reel gets pushed to more viewers, triggering more comments. Compounding growth.
What Your Commenter Sees
One keyword. One instant DM. No copy-pasting links in replies.
@shopper_priya commented on your Reel
omg need this!! LINK 🔥
yourbrand
Active now
Delivered in 0.4s — fully automatic
High-Converting Comment-to-DM Funnels
Battle-tested keyword → DM patterns used by 1,000+ ReplyKaro creators in 2026. Steal these for your next Reel.
Lead Magnet Delivery
Comment ‘GUIDE’ → instant DM with your free PDF. Used by coaches, course creators, and B2B SaaS to capture leads from viral Reels.
Product Link Drop
Comment ‘BUY’ → instant DM with your Shopify product link. Used by D2C jewellery, beauty, and fashion brands to drive direct conversions from Reels.
Booking & Calendly
Comment ‘BOOK’ → instant DM with your Calendly link. Used by coaches, consultants, and creators to convert viral content into discovery calls.
Discount Code Delivery
Comment ‘DEAL’ → instant DM with your discount code + landing page link. Highest-converting use case for D2C brands in 2026.
Why Comment-to-DM Outperforms ‘Link in Bio’
10x algorithm boost
When you say ‘comment LINK and I'll DM you’ instead of ‘link in bio’, Instagram sees a flood of comments — the strongest engagement signal in the algorithm. Comments are an engagement signal on Reels.
90%+ DM open rate
Direct Messages have a ~95% open rate in Instagram, compared to 1–3% click-through on link-in-bio. When your link lands as a DM, almost everyone sees it — and most click within 5 minutes.
Zero friction conversion
Link-in-bio requires the user to leave the post, navigate to your profile, find the right link, and tap it. Comment-to-DM puts the link directly in their inbox in 1 second — the lowest-friction CTA on Instagram.
Compound growth via Follow-Gate
Layer ReplyKaro's Follow-Gate on top: every commenter must follow you before receiving the DM. This asks people to follow you before the link is sent.
Built-in lead capture
Every comment-to-DM trigger automatically captures the commenter's Instagram handle in your dashboard. Export as CSV to your CRM or use ReplyKaro's Fan Mode to track their lifetime engagement and award loyalty rewards.
Official API
Meta-Verified.
Official API only.
ReplyKaro uses Instagram's official Private Replies API and Messaging API exclusively. No browser bots. No password sharing. Meta rate-limits us at 200 DMs/hour per account to keep your account safe even at viral scale.
Honest Answers to Real Questions
What happens during a viral surge — say 10,000 comments in an hour?
ReplyKaro's queue engine accepts every comment event but releases DMs at Meta's safe rate of 200/hour per account. Every commenter still gets their DM — just spaced out over several hours during the surge. Pro Pack accounts get priority queue access and viral-surge handling for instant processing of high-priority triggers.
Can I run multiple keyword triggers on the same Reel?
Yes. You can set unlimited keyword triggers per Reel on the Starter Pack. Each keyword can map to a different DM (e.g. ‘PRICE’ → pricing PDF, ‘DEMO’ → Calendly link, ‘FREE’ → discount code). Triggers are evaluated independently, so a commenter typing multiple keywords gets multiple DMs.
Do I have to manually approve every comment trigger?
No — that defeats the purpose of automation. ReplyKaro's webhook fires the moment a comment is posted, the keyword match is automatic, and the DM is sent without manual approval. You can review every trigger in your dashboard's automation log after the fact.
What about non-English keywords like Hindi or Hinglish?
ReplyKaro's keyword matcher is Unicode-native, so it works with Hindi, Hinglish, Tamil, Telugu, Marathi, Bengali, and any other Instagram-supported language. Common Hinglish triggers like ‘BHEJO’, ‘DEDO’, ‘PRICE BATAO’ work out of the box.
Comment-to-DM Pricing
Free Forever plan includes comment-to-DM. Upgrade to ₹99/mo ($3/mo globally) for higher volume + Story automation.
Comparing tools?
We compare ReplyKaro with other Instagram and Facebook DM tools in plain text, with sources and the date we checked each one.
See the comparisonsFAQ
Comment-to-DM — FAQ
What is Instagram comment-to-DM automation?
Comment-to-DM automation watches your Instagram Reels and Posts for a specific keyword in the comments. When any follower comments your trigger word (e.g. ‘LINK’, ‘PRICE’, ‘FREE’), the tool automatically sends them a personalised Direct Message with the content you set — link, discount code, PDF, or any text. ReplyKaro delivers these DMs in under 1 second using the official Instagram Graph API.
Is comment-to-DM automation allowed by Instagram?
Yes, when the tool uses Instagram's official Messaging API and Private Replies API. ReplyKaro uses both official APIs, never asks for your password and does not use browser bots. Comment-to-DM is a standard Instagram Graph API feature offered by many tools. Instagram allows one private reply per comment, within 7 days.
How fast is ReplyKaro's comment-to-DM delivery?
ReplyKaro delivers comment-to-DM messages in 0.4–1.0 seconds end-to-end (from comment posted to DM landed). This is the fastest delivery time among Meta-verified AutoDM tools in 2026, achieved through webhook-based Instagram event processing and a Redis-backed queue.
How many comments per hour can ReplyKaro handle?
ReplyKaro processes up to 200 DMs per hour per Instagram account on the Starter Pack (Meta's hard cap on the Messaging API). The Pro Pack raises this to priority processing with viral-surge handling — designed for accounts where a single Reel can generate large comment surges in an hour.
Is there a free comment-to-DM tool for Instagram?
Yes. ReplyKaro's Free Forever plan includes unlimited comment-to-DM keyword triggers on 1 Instagram account, with 1,000 DMs/month included. No credit card required, no expiry, no 25-contact cap. Upgrade to the ₹99/month ($3/mo globally) Starter Pack for 30,000 DMs/month and Story automation.
Will comment-to-DM get my Instagram shadowbanned?
Not when you use a Meta-verified tool like ReplyKaro. All DMs are sent through Instagram's official Private Replies API, which is rate-limited by Meta itself to safe thresholds (200 DMs/hour). Shadowbans only happen when tools use unofficial methods — browser extensions, password-based scrapers, or fake-account automation. ReplyKaro uses none of these.
What is comment to DM on Instagram?
Comment to DM on Instagram is a feature where someone comments a specific keyword on your post or Reel and automatically receives a Direct Message from you. For example: you post a Reel and say 'comment LINK and I'll DM you the free guide'. When your follower comments LINK, they instantly receive your DM with the guide — no manual effort. Many tools offer comment-to-DM automation through Meta's official Graph API, including ReplyKaro.
How do I set up comment to DM on Instagram for free?
To set up free comment-to-DM on Instagram: (1) Sign up at replykaro.com — Free Forever plan, no credit card. (2) Connect your Instagram Business or Creator account via Meta OAuth. (3) Select the Reel or post where you want keyword triggers. (4) Set your keyword (e.g. LINK, PRICE, FREE). (5) Write your DM and go live. Takes under 60 seconds. ReplyKaro's Free Forever plan includes unlimited keyword triggers and 1,000 DMs/month at no cost.
Does comment to DM work on Instagram Reels?
Yes. Comment-to-DM automation works on Instagram Reels, standard posts, and carousels. Reels are the most popular use case because comment CTAs on Reels ('comment LINK to get the guide') dramatically boost engagement — Instagram's algorithm interprets comment volume as a strong ranking signal, pushing the Reel to more viewers. ReplyKaro processes Reel comments in 0.4–1.0 seconds via Meta's webhook API.
How does ReplyKaro compare with other comment-to-DM tools?
Comment-to-DM tools differ in free-plan limits, pricing model (flat, per contact or per DM) and which features need a paid plan. ReplyKaro has a free plan (1 account, 3 active automations, 1,000 DMs a month) and paid plans from $3 a month (₹99 in India). We compare other tools, with sources and dates, on the alternatives page.
Reviews
What customers say on Trustpilot
78% 5-star · 22% 4-star · as of October 5, 2026
Indi website with a friendly UI and competitive prices. You can try their free version before commiting. The payment process is trustworthy (already finished one month subscription and upgraded to a yearly one)
Marion Getto · DE · Oct 3, 2026
I have been using for a few days now. Very smooth experience and very affordable plans. Same features are 30 times in other companies. Keep up the good work!! 👍
Ravinder Rawat · IN · Sep 23, 2026
It’s been pretty good I’ve been using it since two months. And they are very responsive when I reach out to them!
Hrithika · IN · Sep 20, 2026
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