A comment-to-DM automation is the core of Instagram DM automation: it auto-sends a private message the moment someone comments a keyword on your post. Here is how to set one up in about a minute.
Start a new automation
From the sidebar, open Automations → Comments and click New automation. Give it a name you will recognize later, like "Guide lead magnet".
Pick the post and keyword
Choose the post you want to watch, then enter your trigger keywords - for example price, link, or guide. You can also trigger on any comment. See keyword match modes for how matching works.
Write the DM and add a button
Write the message IGMsg will send. Use @{{username}} to personalize it, and add multiple variants so replies get rotated to avoid spam detection. You can attach a link or a payment button.
Turn it on
Toggle the automation to Active and save. IGMsg now watches that post around the clock and replies to matching comments instantly, using the official Instagram API.