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Meta Business Partner
100% Official API
Stop typing the same reply. Auto-respond to comments in seconds.
The "link please" comments stack up faster than you can type. InstantDM answers every keyword comment in under 3 seconds: public reply, private DM, or both. AI replies cover the rest.
Official Meta Business Partner COMMENT ON YOUR POST
follower.mia LINK
PUBLIC REPLY, SECONDS LATER yourbrand Sent you a DM!
PRIVATE DM, SAME MOMENT yourbrand The product page you asked for:
yourstore.com/product
3 sec from comment to reply
24/7 every comment answered
$9.99/mo flat, no per-contact billing
500 free automations every month
The term, defined
What is an Instagram comment auto-reply?
An Instagram comment auto-reply is a response your account sends automatically when someone comments on your post. With InstantDM it comes in two forms: keyword replies, where a comment containing your trigger word ("LINK", "PRICE") gets a preset reply and a private DM within seconds, and AI comment replies, where a goal-based AI agent answers the comments that don't match any keyword. Both run through Meta's official Instagram Graph API. InstantDM is an official Meta Business Partner and connects over OAuth, never your password.
The reply itself is only half the value. The natural next step is comment-to-DM: moving the conversation into the inbox, where you can deliver a link, a PDF, or a discount code and follow up later. That's what turns a comment into a contact. See the link DM use case and the comment-to-DM link feature.
Two kinds of replies
Keyword replies vs. AI comment replies
Keywords catch the comments you planned for. The AI agent catches everything else.
Keyword replies
You define the trigger words and write the reply once. Every comment containing "LINK", "PRICE", or "INFO" gets exactly the response you wrote, plus the DM you attached, in under 3 seconds. Available on every plan, including free.
Comment-to-DM link feature →AI comment replies
"Is this available in medium?" doesn't match a keyword, but it still deserves an answer. The AI agent is goal-based: set a goal and it works to achieve it. Included in Legend Pro at the flat price, no credit metering.
AI comment replies in depth → The difference
Replying by hand vs. comment automation
Replying by hand
- ✗ Replies go out hours later, after the buyer has moved on
- ✗ Links get copy-pasted to dozens of people, one DM at a time
- ✗ Comments that arrive overnight never get answered
- ✗ No email capture, so a commenter never becomes a contact
- ✗ No record of which posts or keywords actually get replies
InstantDM comment automation
- ✓ Every keyword comment answered in under 3 seconds
- ✓ Public reply, private DM, or both: you choose per keyword
- ✓ Links, PDFs, and discount codes delivered automatically
- ✓ Email and follow gates turn commenters into contacts
- ✓ AI replies cover the questions your keywords don't catch
"A launch post that works brings a flood of 'link please' comments, and answering them by hand eats the rest of the day. A keyword reply answers each one while the post is still climbing, and the public 'sent!' nudges the next person to comment too."
The launch-day workflow — why creators automate comment replies first How it works
From comment to reply in under 3 seconds
1
Connect your Instagram
One click through Meta's official OAuth. InstantDM never asks for your password.
2
Set keywords and write your replies
Pick the trigger words, write the public reply and the DM once, and attach your link or PDF. On Legend Pro, turn on AI replies for everything else.
3
Go live and stay live
Every matching comment gets its reply in under 3 seconds, on Reels, carousels, and feed posts, at any hour.
Everything you need
Built for answering comments
What powers every automatic response, from the first keyword reply to the AI answer at 3 a.m.
Instant keyword replies
Set a trigger word on any post. Every matching comment gets your reply and your DM in under 3 seconds.
Public reply + private DM
Choose per keyword: a public comment reply, a private DM, or both. The public "Sent you a DM!" keeps the thread active while the DM carries the link.
AI comment replies
Included in Legend Pro. Set a goal and the AI agent works to achieve it, answering the comments that don't match any keyword. Flat price, no credit metering.
Every post type
Reels, carousels, and feed posts are covered the moment your account is connected, and Instagram Collab Posts have their own automation too.
Safety suite on every plan
DM Queue, Super Slow Mode, Rate Limit Controller, and Flood Control pace your replies so a viral post stays within Instagram's limits.
Gates and follow-ups
Ask for a follow or an email before the DM delivers the link, then continue with a timed follow-up sequence.
In action
Four ways creators use comment auto-replies
1
Link delivery
A follower comments "LINK" on your product launch post. The product page and a discount code reach their DMs in under 3 seconds.
2
Lead magnets
Someone comments "PDF" on your carousel. An email gate collects their address, the free guide arrives by DM, and a follow-up sequence introduces your paid offer later.
3
Course signups
A follower comments "COURSE" on your Reel. The course landing page lands in their DMs, and a scheduled follow-up reminds them before enrollment closes.
4
Affiliate promotions
Someone comments "BONUS" on your review post. Your affiliate link and the bonus PDF go out by DM, followed by your personal recommendation.
Pricing
InstantDM vs. replying to comments by hand
BEST VALUE
InstantDM comment automation
$9.99/mo
Every comment answered in seconds, around the clock.
- ✓ Keyword replies with comment-to-DM delivery
- ✓ Public reply and private DM, chosen per keyword
- ✓ AI comment replies included in Legend Pro
- ✓ Safety suite on every plan, including free
- ✓ Email and follow gates before link delivery
- ✓ Timed follow-up sequences after the first DM
Replying by hand
$0/mo
Free, until you count the hours it takes.
- ✗ Replies arrive hours later, after interest has faded
- ✗ Overnight comments go unanswered until morning
- ✗ Links get pasted into DMs one person at a time
- ✗ No gates, so commenters never become contacts
- ✗ No way to tell which keyword or post is working
- ✗ A viral post buries you for days
Manual comment replies don't scale
FAQ
Questions about auto-responding to comments
How do you automatically respond to Instagram comments?
Set a keyword like "LINK", "PRICE", or "INFO" and write the reply once. When someone comments that keyword on your post, InstantDM sends your response in under 3 seconds: a public comment reply, a private DM, or both. It runs 24/7 on every post you have up.
Is it safe to auto-reply to Instagram comments?
Yes. InstantDM is an official Meta Business Partner and replies through the official Instagram Graph API. You connect over OAuth, and InstantDM never asks for your password. There are no browser extensions or workarounds involved.
How fast does the auto-reply arrive after a comment?
Under 3 seconds from comment to DM. The person who asked is still looking at your post when the answer lands in their inbox.
Does comment auto-reply work on Reels, carousels, and feed posts?
It works on all of them. Reels, carousels, and feed posts are covered the moment your Instagram Business account is connected, and Collab Posts have their own automation.
Can I send both a public reply and a private DM?
You can, and most creators do. The public reply ("Sent you a DM!") keeps the thread active and shows other followers the keyword works, while the private DM carries the link. You choose per keyword.
What are AI comment replies?
AI comment replies handle the comments that don't match any keyword. The InstantDM AI agent is goal-based: set a goal and it works to achieve it. AI comment replies are included in Legend Pro at the flat price, with no credit metering. More on AI comment replies here.
What happens if my post goes viral and hundreds of comments arrive at once?
Every comment still gets its reply. The safety suite on every plan (DM Queue, Super Slow Mode, Rate Limit Controller, and Flood Control) paces your sends so your account stays within Instagram's limits. Trendsetter adds Advanced Account Safety Mode plus a Viral Mode handler and lifts the 750 DMs/hour pacing.
Is there a free plan for comment auto-replies?
Yes. The free plan includes 500 automations per month plus a 7-day trial of paid features, enough to run keyword replies on real posts before paying anything. Legend Pro is $9.99/mo flat when you outgrow it.
Explore more
Related tools, comparisons, and guides
Every comment is a hand raised. Answer it in seconds.
30,000+ creators use InstantDM to reply to every comment automatically: keyword replies, private DMs, and AI answers. $9.99/month flat.
Start Auto-RespondingNo credit card required · Cancel anytime · $9.99/mo flat · 500 automations free every month
