Instagram Comment Keywords: 30 Trigger Words for DM Automation (2026)
Short answer: The best Instagram comment keywords are short, one-word, easy to type on a phone and tied to a single offer, such as GUIDE, PRICE, BOOK or LINK. Below are 30 trigger words grouped by goal, how to choose between exact and contains matching, and the mistakes that make a keyword fire on the wrong comments.
Last updated: October 17, 2026. Written by the BossReply Team. BossReply is our product and supports comment-to-DM keyword triggers; the advice here applies to any tool. We have no tested conversion data for individual words, so we do not claim that any keyword converts better than another.
Key takeaways
Pick one keyword per offer. A word that could mean two things sends people the wrong item.
Use short everyday words and avoid anything people misspell. Commenters type on phones, quickly.
Meta allows one private reply per commenter within 7 days of the comment, so each keyword's first DM must deliver the promise on its own.
Test every keyword from a second account, including common misspellings, before you announce it.
What is a comment keyword trigger?
A comment keyword trigger is a word that, when someone writes it under your post or Reel, makes your automation send that person a DM. The tool watches comments, matches the word and sends the message through Meta's private replies feature.
The keyword is also the call to action in your caption and video: "Comment GUIDE and I'll send it to you." Setup details are in our comment-to-DM setup guide. In BossReply, the DM is sent automatically and no public reply is posted under the comment.
How do you choose a good keyword?
A good keyword is easy to remember, easy to type, unlikely to appear in unrelated comments and clearly linked to what you promise. Run each candidate through the five checks below before using it.
Check | Good example | Problem example |
|---|---|---|
Short and simple | GUIDE | BLUEPRINT2026 |
Hard to misspell | PLAN | ACCOMMODATION |
Unlikely in normal chat | CHECKLIST | YES, LOVE, WOW |
One meaning | MENU | INFO (could mean anything) |
Matches the promise | COUPON for a code | SECRET for a price list |
What are 30 Instagram comment keywords you can use?
Here are 30, grouped by what you are giving away. Each one is a suggestion, not a tested winner; pick the ones that fit your own words and audience.
Free resources and lead magnets (8)
GUIDE for a PDF or mini guide.
CHECKLIST for a step list.
TEMPLATE for a document, Notion or spreadsheet template.
PLAN for a workout, study or content plan.
RECIPE for a recipe card.
SCRIPT for a copy-and-paste script.
TOOLKIT for a bundle of links.
FREE for a general freebie. Use only if you have one offer at a time, because it is generic.
Our lead magnet examples go deeper on what to put behind these words.
Sales and prices (7)
PRICE for a price list or quote request.
COUPON for a discount code.
SHOP for a product link.
SIZE for a size guide plus a question.
MENU for a restaurant or service menu.
OFFER for a limited-time offer.
ORDER for a direct order link.
Bookings and calls (5)
BOOK for a booking link.
CALL for a free discovery call.
DEMO for a product demo request.
QUOTE for a custom quote form.
SLOT for a limited number of openings.
Events and launches (5)
JOIN for a community, group or challenge.
WEBINAR for a registration link.
LIVE for a reminder about an upcoming live.
WAITLIST for an early-access list.
CHALLENGE for a multi-day challenge.
Engagement and giveaways (5)
LINK for the link mentioned in the video.
START for a beginner starter pack.
INFO for general details. Risky because it is vague.
WIN for giveaway entry (see our giveaway automation guide).
YES for a quick opt-in to a question you asked. It will also appear in normal comments, so use exact matching and a specific caption.
If you post in another language, translate the keyword and test how your audience actually types it. In Arabic, Spanish or French, people may type with or without accents or diacritics, so test both variants. Some tools let you list several keywords for one trigger, which handles this.
Should you use exact match or contains match?
Use contains matching when the keyword is a rare word and exact matching when it is a common one. Contains fires whenever the word appears anywhere in the comment; exact fires only when the comment is that word and nothing else.
Contains: good for GUIDE, WEBINAR, WAITLIST, because people write "GUIDE please!" and the word rarely appears otherwise.
Exact: better for YES, LINK, START, INFO and any word that appears in normal sentences. It prevents a comment like "I love this link style" from firing the automation.
Matching options differ by tool, so check yours. For reference, Meta's own Business Suite inbox automations are described in a search summary of Meta's help center as desktop-only, matching exact keywords and allowing up to five; we could not open the full page, so confirm it before relying on it. That feature is for replying to messages, not for comment-to-DM.
How do keywords interact with Meta's rules?
Every keyword you set up is subject to the same Meta limits. The ones that affect keyword design, read on Meta for Developers in October 2026, are listed here.
One private reply per commenter. If someone comments GUIDE and then PRICE under the same account, they do not get a second automated DM from the private reply feature. Design one entry point per post.
7-day window. The private reply must be sent within 7 days of the comment.
750 per hour. Meta lists a cap of 750 private reply calls per hour per professional account for post and Reel comments. If a post is likely to go viral, a very popular keyword could exceed it.
Live videos. Replies to Live comments can only be sent during the broadcast, and the limit is higher (100 calls per second).
For the compliance side, see our explainer on whether DM automation is allowed.
What mistakes make keywords fail?
Most failures come from ambiguity, not from the tool. Avoid these.
Two offers, one keyword. If GUIDE sends a PDF on Monday and a course on Friday, old posts send the wrong thing. Use a different word per offer, or attach the trigger to a specific post.
Not saying the word in the video. People skim captions. Say the keyword out loud and show it on screen.
Keyword collisions. If one trigger is PLAN and another is PLANNER, a contains match on PLAN also catches PLANNER. Choose words that do not contain each other.
All-posts triggers. A keyword listening on every post fires on comments that were never meant for it. Start with one post.
Changing the keyword after posting. Comments with the old word stop working, and you cannot reach those people through a private reply after 7 days.
Unverified claims in the DM. If the keyword promises a "free" item, the DM must deliver it. Do not bait with a keyword that leads to a sales pitch.
How do you test and improve keywords?
Test every keyword from a second Instagram account that does not follow you, in upper case, lower case and with a typo. Then watch your real comments for a week and look at which misspellings people use. Add those variants to the trigger.
To compare two keywords fairly, use the same offer and format in two similar posts and compare the number of DMs sent and the number of replies received. Treat a few posts as an indication, not proof, because reach changes from post to post. A tool that shows this in one inbox makes the review easier; BossReply keeps Instagram, WhatsApp, Messenger, Telegram and website chat in one shared inbox. If you are comparing tools, see our comment-to-DM tools comparison and the BossReply comment-to-DM page.
Frequently asked questions
How many keywords can I use on one post?
That depends on your tool, not on Meta. We recommend one per post so people are not confused about what to type.
Are keywords case sensitive?
It depends on the tool. Test with upper case, lower case and mixed case before launch.
Can I use emojis as keywords?
Some tools support them, but they are harder to match reliably across devices. A plain word is safer.
What if someone comments the keyword twice?
Meta allows one private reply per commenter, so the second comment will not get another automated private reply.
Does the keyword need to be in English?
No. Use the language your audience writes in, and test spelling variants.
Which keyword converts best?
We could not verify any reliable data that ranks specific words, and results depend on your offer and audience. Test your own.
Can I change the keyword later?
Yes, but old comments with the previous word will not trigger the new automation. Keep the old word active on older posts.
Sources and method
Read in October 2026. The keyword list is our own editorial suggestion and is not based on measured conversion data.
Meta for Developers: Private Replies: one reply per commenter, 7-day window, Live broadcast rule.
Meta for Developers: Messenger Platform rate limits: 750 calls per hour and 100 calls per second for private replies.
Meta Business Help: Inbox Automations on desktop: we saw only a search summary (keyword limit of five, exact match, desktop only), so this is unverified by us.
Conclusion
A good keyword is a short word with one clear promise. Pick one per offer, choose exact or contains matching deliberately, test it with typos and say it out loud in your video. When you are ready to put these triggers to work, you can set them up with BossReply at chat.bossreply.com.