Instagram DM automation guides
These Instagram DM automation guides show how to set up auto replies and comment to DM, explain Meta’s messaging rules and compare the tools, in plain English. Each one answers one question, walks through an example and links to its sources.
How to set it up
Instagram comment auto reply: 3 ways to set it up
Answer comments automatically: Meta’s free Comment to message, comment to DM, and public replies.
Read the guideHow to set up auto reply on Instagram: 3 ways
Instagram’s FAQs, Meta Business Suite’s instant reply and away message, and keyword replies, with templates.
Read the guideComment for link on Instagram: how to send links by DM
Send your link by DM to everyone who comments a keyword, with captions and replies you can copy.
Read the guideInstagram’s rules and limits
Instagram DM automation rules: what is allowed
Is automation allowed? Yes, with the official API and inside Meta’s rules. See every rule, with examples and a checklist.
Read the guideHow the Instagram 24-hour messaging window works
You can message a person for 24 hours after their last message. Learn what opens the window, what restarts it and what to do when it closes.
Read the guideInstagram private replies: how to reply to comments in DM
Answer a comment with one DM, within 7 days. Learn the rules and how to write a reply that people answer.
Read the guideInstagram DM limits: how many DMs can you send?
What Instagram and Meta really say about DM limits, which numbers online are myths, and what limits you first.
Read the guideCan you auto DM new followers on Instagram? What works instead
Why most tools cannot DM new followers, the limited beta Meta runs, and four welcome ideas that work.
Read the guideCompare tools
Best Instagram DM automation tools in 2026: an honest comparison
Ten tools compared from their own pages: prices, free plans, triggers, inbox and AI, ours included.
Read the guideManyChat pricing in 2026: plans, active contacts and real costs
ManyChat’s plans, what counts as an active contact, overage fees and three worked cost examples.
Read the guideThe rules in one minute
Short on time? These five rules cover the basics. Each one links to the full explanation.
- 01The 24-hour windowYou can message a person for 24 hours after their last message. Each new message from them restarts the 24 hours.
- 02Private repliesA comment allows one private reply, within 7 days. It does not open the 24-hour window.
- 03No cold messagesYou can message only people who wrote to you or commented first. No lists, no strangers.
- 04Official API onlyUse a tool on Instagram’s official API. Tools that log in with your password break Instagram’s terms.
- 05Message lengthEach message can be at most 1,000 bytes. Most emoji take 4 bytes each.
See the rules at work in DM Flow
DM Flow is built on these rules. Each page below shows one part of it. New here? Start with what DM Flow does.
Comment to DM
Keyword auto-reply
ManyChat alternative
Put the rules to work
DM Flow checks the 24-hour window and the 7-day private-reply limit before every message. No card needed.