Instagram keyword triggers and auto-reply
Updated: August 2026
A keyword trigger is the small decision that decides whether the rest of your automation works. Match too tightly and you miss the person who typed guide please; match too loosely and you auto-reply to someone arguing in your comments. ReelDrop gives you three match modes, rotating replies, and a per-post cap. ReelDrop's free plan includes 5 active DM automations plus a full Instagram Reels scheduler, and it never asks for a credit card.
Three ways to match
Contains fires when the keyword appears anywhere in the message. This is the default for a reason: real comments are send me the guide!! and GUIDE pls, not the bare word.
Exact fires only when the message is the keyword by itself. Use it when the word is common enough to show up in ordinary conversation.
Any skips keyword matching and replies to everything on that post. Right for a giveaway, wrong for anything that attracts argument. Matching is case-insensitive in every mode, so GUIDE and guide are the same word.
Three places a keyword can fire
The same keyword logic runs on comments, incoming DMs, and story replies. A DM trigger turns a keyword into a self-serve FAQ: someone messages PRICE and gets your rate card without waiting for you to wake up.
You can scope a comment trigger to one post, to a post you have not published yet, or to everything. A per-post reply limit caps how many public replies go out, which is the guard rail for the day a Reel does ten times its usual numbers.
Replies that are not identical
Write several variants of the public reply and the DM, or start from the presets and the pre-generated bank. Each person gets one variant, chosen the same way every time for that person, so the same commenter never sees the wording change mid-conversation.
This is partly about not looking like a bot and partly about not sending a thousand byte-identical messages through a messaging API in an hour.
PRICE as a keyword in the DM inbox
A wedding photographer set a DM trigger on PRICE and PRICING that sends her packages PDF. Pricing was most of her inbox and none of her interesting conversations. Now the pricing questions answer themselves and she reads what is left.
One post, one word, capped
A meal-prep account ran a giveaway with match set to any and a per-post reply limit of 500. The post drew more comments than that. Public replies stopped at the cap, DMs kept going, and the comment section did not turn into a wall of the same sentence.
Frequently asked questions
Is keyword matching case-sensitive?
No. GUIDE, Guide, and guide all match.
Can one automation watch several keywords?
Yes. Add as many as you want to a single automation, and any of them triggers it.
What stops it replying to every mention of a common word?
Exact match, mostly. If your keyword is a word people use in normal conversation, exact match means the automation only fires when the comment is that word on its own.
Can I auto-reply to DMs, not just comments?
Yes. Choose the DM trigger and the same keyword rules apply to incoming messages.
Do the automated replies all read the same?
Only if you write one variant. Write a few and ReelDrop rotates them, deterministically per person, so a conversation stays consistent while the comment thread does not repeat itself.
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