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Auto-replies in depth

Triggers, links, reminders, and which auto-reply answers when several could.

An auto-reply waits for a trigger, then answers in the DMs (and under the comment, if you like). This page covers every option; to make your first one, see Your first auto-reply.

Triggers

TriggerRuns when someone…Choose
Commentscomments on your postOne post, several posts (Pro) or every post, including ones you post later
Story repliesreplies to your storyAny story, or one story you pick
DMssends you a messageAny message, or messages with your words

Each trigger runs on words, on a meaning, or on everything:

  • Has a word: whole words, ignoring capitals, so GUIDE matches “guide please 🙏” but not “guidebook”. Add several words to catch spellings; a phrase like price list matches anywhere in the text.
  • Means something (AI), on Growth and Business: describe what people mean, like “asks about the price”, and the AI matches comments and messages that mean it in any words or language. Each match uses one AI credit; nothing is charged when nothing matches. See AI assistant.
  • No words: answers everything on that trigger. Useful on one post or story; on every post it answers every comment.

What it sends

  • A public reply under the comment, so others see you answered. Add up to five versions and one is picked at random each time, which reads less like a bot.
  • The DM: your opening message, then the link as a button. On Pro and above, add up to three links to one DM, each with its own button and its own click count.
  • Only send to followers (Pro): people who don't follow you are asked to follow first, then get the link when they tap the button.
  • Ask for their email first: the link follows once they reply with an email. Throwaway addresses are turned away. Emails land in Emails.
  • Products from your store, as cards they can tap to buy or download. See Store and payouts.

Reminders

On Pro and above, an auto-reply can send one reminder when someone stops: they didn't follow, didn't send their email, or got the link and didn't open it. Pick a wait from 30 minutes to 20 hours. The reminder is skipped as soon as they reply or tap the link, and Instagram's 24-hour window means it can't be later than that.

Which auto-reply answers

When more than one could answer, DMFast picks one, in this order:

  1. An auto-reply on that exact post or story, before one on every post.
  2. One whose words match, before one that runs on a meaning (so words never cost credits).
  3. A meaning the AI matches.
  4. One with no words, last.

The same auto-reply answers a person once a day at most, however many times they comment.

Editing, pausing and older comments

  • Use the pencil on Auto-replies to change anything. Changes apply from DMFast's next message, including to people partway through, such as someone who hasn't followed yet.
  • The switch pauses an auto-reply without losing its results.
  • Reply to older comments (Pro): the refresh button answers matching comments from the last 7 days that came in before the auto-reply existed.
Instagram allows one private reply per comment, and DMs only within 24 hours of a person's last message. See Limits and spam.