What Is Auto DM on Instagram? A Plain Guide
Auto DM sends an Instagram message automatically when someone comments, replies to a story or messages you. How it works, what Instagram allows, and how to set it up.
PParth Garg· Founder, Insidemetics · Updated · 3 min read
In short
- Auto DM is an automatic Instagram message triggered by a comment, a keyword or a message.
- The common use: "comment GUIDE" on a reel, get the link in your DMs.
- It must run through Instagram's official API from a professional account; password-based bots risk your account.
- Free trials help you test before you pay: Insidemetics includes unlimited auto DMs on every plan, with 7 days free.
"Auto DM" is short for automatic direct message: Instagram sends a message from your account the moment something happens, without you typing it. For creators, the something is usually a comment with a keyword, and the message is a link people asked for.
What can trigger an auto DM
| Trigger | Example | Common use |
|---|---|---|
| A keyword in a comment | Someone comments GUIDE on your reel | Send a free download or product link |
| Any comment | Every comment on a giveaway or launch post | Reply to everyone without picking words |
| A message to you | Someone DMs you "price?" | Send your price list or booking link |
| A button tap in your DM | They tap "Send me the link" | Check they follow you before sending |
Insidemetics Auto DM handles keyword and any-comment triggers on posts and reels, with an optional button that checks the person follows you first.
Why creators use it
- Links in captions can't be tapped, and "link in bio" loses people on the way.
- Reels can get hundreds of comments in an hour; nobody can reply to all of them by hand.
- Every reply under the comment shows others that commenting works, which brings more comments.
- The DM opens a conversation, so you can follow up when they answer.
What Instagram allows
Automated replies to comments are called private replies. Meta's developer documentation allows one private message per comment, within 7 days of the comment, sent from a professional (Business or Creator) account. Follow-ups are only allowed once the person replies, within 24 hours of their reply.
Free vs paid auto DM
Free plans usually cap how many people you can message or how many automations you can run. On Insidemetics, auto DMs are unlimited on every plan; Pro runs 10 automations at a time and Business runs as many as you like. Followers-only links and email capture are on Pro and Business.
How to set it up
- Switch your Instagram to a Creator or Business account (free, in Instagram's settings).
- Create an Insidemetics store, start your 7-day trial and open Auto DM.
- Connect Instagram through Instagram's login page.
- Pick a post or reel, a keyword and the link to send.
- Say the keyword in your reel and caption, then test it from a second account.
Frequently asked questions
Is auto DM allowed on Instagram?
Yes, when it runs through Instagram's official messaging API from a professional account and follows Meta's rules for private replies.
Can I auto DM new followers?
Instagram's official API doesn't let apps message people who haven't commented or written to you, so tools that promise this aren't using the official route.
Does auto DM work on reels?
Yes. Comments on reels and feed posts can both trigger it.
Parth Garg · Founder, Insidemetics
Parth is building Insidemetics, a link-in-bio creator store where buyers pay straight into the creator's own PayPal or Razorpay account and the platform takes 0% of sales. He writes these guides from what he learns building checkout, delivery and billing for creators.
Sources (checked October 2026)