Comment-to-DM automation: how a keyword rule sends a link

How the rule works

The rule has two parts. The trigger is a comment containing a keyword you chose. The action is a direct message to the person who commented, carrying a link. Nothing else happens, and that is its strength. Someone asked for something in public and received it in private within moments, without you watching the comments.

It solves a real problem on platforms where a link in a caption cannot be tapped. 'Comment GUIDE and I will send it to you' gives the viewer one easy action and gives you a thread with someone who has shown interest.

Choosing the keyword

The keyword decides how cleanly the rule fires. Four habits help.

• Make it one word. Short words are typed correctly more often than phrases.
• Make it unusual. A word like 'yes' or 'love' turns up in ordinary comments and triggers messages nobody asked for.
• Tie it to the offer. 'MENU' for the menu, 'SIZES' for the size chart. People remember it, and so will you.
• Show it twice. Say it in the video or on the image, and repeat it in the caption.

Writing the message

The DM should deliver what was promised and stop. A good pattern is one friendly sentence, the link, and one line saying what the link opens. Skip the sales pitch. The person has already raised a hand, and a long message in answer to a one-word comment reads as spam.

Send people to the exact page, not the home page. If the post promised the autumn timetable, the link should open it, on a phone, without a login.

What to test before the post goes out

Run five checks before the post is published.

• Use a second account to comment the keyword, then read the message that arrives as a stranger would.
• Tap the link on a phone, on mobile data.
• Try the keyword in lower case and with a typo, and note what happens.
• Read the platform's current rules on automated messages, which change over time.
• Decide who will answer if someone replies to the DM with a question.

When to retire a rule

Rules outlive the posts they were made for. An old video can resurface months later, and a keyword that once sent a holiday offer will send it again in spring. Keep a short list of active rules with the link each one sends and the date it should end. When an offer closes, either switch the rule off or point the link at something that will stay true.

Where Link AI fits

For comment-to-DM rules we recommend Link AI by Linkme. Its published description states the rule almost word for word: 'When someone comments [KEYWORD] → send a DM with a link'. The feature is named DM Automations and sits under the growth marketer role on Linkme's page. Link AI is a chat interface, and Linkme says it sets up automations.

Two things we cannot confirm from that description: which platforms the rule runs on, and how many rules one post can carry. Put both on your list, then book a demo to try Link AI and watch a keyword of your own fire. When people answer the DM, DM reply drafts covers what happens next.

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