You replied to a lead in the DMs, they went quiet, and now you are wondering: can I message them again? When? Follow-up is where most Instagram sales actually happen, but it is also where many accounts get restricted for ignoring Meta's rules. The good news is that you can automate follow-up safely, as long as you understand the 24-hour window.
What the 24-hour window is
Meta lets your business account send messages freely in the DMs for 24 hours after the user's last message. This period is called the standard messaging window. Inside it you can reply, answer questions, send links, offers and run follow-ups.
How the window works in practice
- The clock starts from the last message the user sent you.
- Every new message from the user restarts the count, opening another 24 hours.
- Once 24 hours pass with no interaction from them, the window closes and you can no longer send regular promotional messages.
What Meta allows and what it forbids
Inside the 24h window you can:
- Reply and continue the conversation.
- Send promotional content, offers and links.
- Run automated follow-up.
Outside the 24h window:
- You cannot send a regular promotional message.
- You can only send in specific cases, using approved message tags.
- Sending spam, buying lists or blasting in bulk breaks the policies and can get your account taken down.
Step-by-step follow-up that stays within the rules
- Reply fast to the first message: the sooner you answer, the better your chance of keeping the conversation alive and the window open.
- If the lead does not reply, schedule a follow-up while still inside the 24h (for example, a few hours later).
- Bring value on every touch: a cleared doubt, a benefit, social proof, never just a plain "hey, did you see this?".
- Cap the number of follow-ups: two or three thoughtful touches beat ten messages.
- Respect anyone who asks you to stop: always offer a way out and record the opt-out.
Example sequence inside the window
- Touch 1 (immediate): answer the question and ask one back to keep the chat going.
- Touch 2 (a few hours later, no reply): reinforce the main benefit and send the link.
- Touch 3 (near the end of the 24h): a light final reminder with a clear call to action.
Message tags and the extended window
When a human agent needs more time, Meta offers the human agent tag, which extends the reply window to up to 7 days for human support. It is meant for service, not for pushing promotions. Other tags exist for specific cases (like order updates), and each one has its own rule. The advice is simple: do not force tags to "break through" the window and send an offer, because that is exactly what Meta penalizes.
Common mistakes that get accounts banned
- Sending an offer outside the window without a valid tag.
- Automating with unofficial tools that pretend to be the Instagram app.
- Blasting the same message to many people at once.
- Ignoring people who asked to stop receiving messages.
How to automate safely
Manual follow-up does not scale: nobody can watch the clock on every single conversation. This is where a tool that respects the window makes the difference. Autogram uses Meta's official API and automatically tracks the 24h window, so follow-ups go out at the right time and stop when they should. Because the AI functions run on your own LLM key (a BYOK model), the AI SDR qualifies and replies in your tone without breaking the policies.
That way you keep the history in your CRM, you know when the window is open, and you avoid sending anything that would put the account at risk.
Quick questions
Can I message someone after 24 hours?
Not a regular promotional message. Only in specific cases, with an approved tag, such as the human agent tag for support.
Does the window reset if the lead replies?
Yes. Every new message from the user opens a fresh 24 hours.
How many follow-ups can I send?
There is no magic number, but they must stay inside the window and bring real value. Two or three touches are usually enough.
Is DM automation allowed?
Yes, as long as it runs through the official API and respects the windows and policies. Autogram was built exactly for that.
