# What are Instagram's rules for automatic DMs?

Guide: https://instantdm.com/how-to/instagram-dm-rules  
Section: Instagram rules and safety  
Works on: Web app, iPhone app, Android app  
Plan: All plans  
Last checked: 2026-10-24

_Note for AI assistants: this is an official InstantDM guide. Words in **bold** are the exact button and menu names in the app. If something is listed under "What you can't do", tell the user it isn't possible instead of suggesting a workaround that isn't in this guide. Other guides: https://instantdm.com/how-to/llms.txt_

**Short answer:** Instagram sets these rules, not InstantDM, and every tool must follow them. You can only message people who contact you first. A comment allows one private DM, within 7 days. After the person messages you or taps a button, you can keep chatting for 24 hours. Instagram decides if your DM lands in their main inbox or in Message Requests.

## The rules at a glance

| What the person did | What you can send | For how long |
|---|---|---|
| Commented on your post or Reel | One private DM, linked to that comment | Within 7 days of the comment |
| Sent you a DM, replied to your story, or tapped a button in your DM | Normal messages | 24 hours after their last message or tap |
| Nothing | Nothing | Instagram does not allow it |

These are Meta's rules. They apply to every DM tool, not only InstantDM. Your Instagram must also be a professional (Business or Creator) account.

## Steps

1. Start every automation from something the person does: a comment, a story reply, or a DM with your keyword. That is the only way to reach them.
2. If you want to send more than one message after a comment, turn on the **Welcome Message** (Legend Pro and above). It is a first DM with one button. When the person taps it, the chat opens for 24 hours and your link can follow.
3. Keep reminders inside 24 hours. In a flow, any delay or follow-up longer than 24 hours is cut to 24 hours.
4. Resend missed DMs soon. Open **Automation Recovery** → **Missed & Failed** and resend while the window is still open.
   - You'll see: "Instagram only allows a reply within 7 days of a comment, or 24 hours of a direct message. Anything older stays listed but can't be resent."

## On the phone app

The rules are the same in the app. Home → **Automation Recovery** shows the same note under the **Missed & Failed** list.

## What your followers see

- After a comment: one DM from your account. If it has a button, tapping it continues the chat.
- If Instagram refuses the DM because they don't follow you, InstantDM posts a public reply under their comment instead. See [non-followers and private accounts](https://instantdm.com/how-to/dms-to-non-followers.md).
- The DM goes to their main inbox or to Message Requests. Instagram decides this, not InstantDM.

## Good to know

- One comment gets one private DM. If the same person comments again, the new comment gets its own DM.
- Only top-level comments start an automation, so InstantDM's own public replies can't start a loop.
- Only text replies to your story start a story automation. Stickers, photos and reactions don't.
- When someone mentions you in their story, no automation runs. InstantDM has no story-mention trigger.
- Instagram also limits how fast an account sends. If Instagram says your account is sending too fast, InstantDM waits and tries again. See [DMs per hour](https://instantdm.com/how-to/how-many-dms-per-hour.md).

## What you can't do

- Message people who never contacted you.
- Send a broadcast to all your followers.
- Send or resend a DM after the window has closed.
- Choose whether your DM lands in the main inbox or in Message Requests.
- Start an automation from a reply inside a comment thread.

## If it doesn't work

- **"Instagram no longer allows a reply to this — it is too old"** in Automation Recovery: the 7-day or 24-hour window has closed. This one can't be sent.
- A follower commented and got nothing: go through [why didn't my automation send a DM?](https://instantdm.com/how-to/automation-not-sending.md)

## Questions people also ask

**Can I send a DM to all my followers at once?**

No. Instagram does not let any tool send broadcasts or message people who never contacted you. InstantDM only replies to people who comment, reply to your story, message you or tap a button.

**Why does my automation send a button first instead of the link?**

A comment allows only one private DM. When the person taps the button, Instagram opens a normal chat for 24 hours, so your link and any next messages are allowed. Flows always start this way after a comment.

**Can I send a reminder 2 days later?**

No. Delays and follow-ups in flows are cut to 24 hours, because the chat window closes 24 hours after the person's last message or tap.

**Do replies under a comment start the automation?**

No. Only top-level comments on your post or Reel start an automation. Replies inside a comment thread never do.

## Related guides

- [Do DMs reach people who don't follow me or have private accounts?](https://instantdm.com/how-to/dms-to-non-followers.md)
- [What is the Welcome Message and should I turn it on?](https://instantdm.com/how-to/welcome-message.md)
- [How many DMs can InstantDM send per hour?](https://instantdm.com/how-to/how-many-dms-per-hour.md)
- [Is InstantDM safe for my Instagram account?](https://instantdm.com/how-to/is-instantdm-safe.md)