How to Auto DM Everyone Who Comments on Your LinkedIn Post

Yes, you can auto DM everyone who comments on your LinkedIn post, and you don't have to sit in your notifications to do it. The flow is the one Instagram creators made famous: someone comments a keyword, they get a public reply under their comment and a DM with your resource, within minutes.

LinkedIn makes it slightly harder than Instagram, because a normal DM only reaches your 1st-degree connections and because LinkedIn watches for accounts that behave like bots. This guide walks the whole setup in seven steps, with the limits that keep it boring and safe.

What do you need before you start?

A LinkedIn account, something worth sending, and a tool that can watch your comments. The resource is the part people skip: a template, a checklist, a swipe file or a short guide works far better than a link to your homepage.

You also need a post that asks for the comment. "Comment GUIDE and I'll send it over" is the whole ask. Without a keyword in the post, you're guessing at who wanted the thing and who was just being nice.

How do you connect your LinkedIn account?

Once, with the Chrome extension, and then you can forget about it. Create a LeadShark account, install the extension and connect your profile. From that point everything runs in the cloud, so automations keep working when your laptop is closed and your browser isn't driving anything.

This matters for safety as much as convenience. Nothing is clicking around inside your browser on your behalf, and there's no extension you have to leave open all day.

Which post and which keyword should you pick?

Pick the post that promises the resource, and keep the keyword to one short word. You can attach an automation to a post that's already live, to a scheduled post, or to the next one you publish, so the replies start the moment it goes out.

People don't type the way you ask. You say "GUIDE", they write "guide pls", "Guide!" or the word in their own language. Add up to 20 keyword triggers per automation to cover the variants, or answer every comment on the post and skip keywords entirely.

What should the comment reply say?

Short, public and obviously human: "Sent, check your DMs!" is enough. The reply does two jobs. It tells that person their request landed, and it tells everyone else reading the thread that commenting actually gets them something.

Every reply is a template you write. LeadShark doesn't generate replies with AI, and comments you've already answered are skipped, so nobody gets the same reply twice.

What should the DM say?

A thank you, the link, and one question. The question is the part most people leave out, and it's what turns a delivery into a conversation: "Here's the checklist. What are you using it for?"

Keep it short enough to read on a phone, and don't stack three asks into the first message. The commenter raised their hand for a resource, not for a sales call.

How do you reach commenters you aren't connected to?

With a connection request first, automatically. A normal LinkedIn DM only reaches 1st-degree connections, and on a post that travels, a large share of your commenters are 2nd or 3rd degree. Skipping them throws away the leads you worked hardest to earn.

On every LeadShark plan, those commenters get a connection request and the DM goes out as soon as they accept. On Apex, LeadShark can DM them directly without waiting. Connection requests are capped daily and weekly, so a big post gets worked through steadily instead of all at once.

What daily limit should you set?

Lower than you think, especially on a new account. You set your own pace, from 0 to 250 DMs a day (150 recommended max), and you can start at the bottom of that range and raise it as the account settles.

Pacing does the rest: human-like delays between actions, quiet hours overnight so nothing sends at 3am, and a lower randomized limit while a new account warms up. No tool can promise LinkedIn won't restrict an account, so the honest advice is to automate replies to people who asked for something and nothing else.

How do you know it worked?

Look at the gap between comments, DMs delivered and clicks. The comment count tells you the hook worked. The delivery count tells you the automation worked. The click count tells you the resource was actually wanted, which is the only one that predicts whether anyone replies.

Then send one follow-up to the people who went quiet, filtered to those who didn't reply and who fit your ideal customer. If you want emails rather than just DMs, send commenters to an email-gated page and sync those addresses to Kit or Beehiiv, or export them to CSV.

How much does this cost?

Plans start at $39 a month, and every plan begins with a 7-day free trial without a card. Pro covers up to 10 running automations with replies, DMs, connection handling and click tracking. Pro+ adds more automations, auto-like and email-gated pages, and Apex adds unlimited automations plus direct DMs to commenters you aren't connected to. The full breakdown is on the pricing page.

Before you pay for anything, price the manual version: take the comments on your last lead magnet post, multiply by the minutes it takes to reply, open the DM, paste the link and send, then add the people you never reached. Across LeadShark, commenters get a response in under 10 minutes on average, which is the part no manual process matches on a busy post.

The step-by-step product walkthrough, with screenshots, lives on our LinkedIn comment to DM page.

FAQ

How do I automatically DM people who comment on my LinkedIn post?

Connect your LinkedIn account to a comment-to-DM tool, pick the post, set the keyword and write your reply and DM. From then on, every matching commenter gets a public reply and a DM with your link, in under 10 minutes on average.

Can I DM someone who commented but isn't a connection?

Not with a normal DM, which only reaches 1st-degree connections. LeadShark sends those commenters a connection request and delivers the DM once they accept. On Apex, it can DM them directly.

Does it work on a post that's already live?

Yes. You can attach an automation to a post that's already up, or schedule a post with the automation attached so it starts the moment you publish.

How many DMs a day is safe?

You set 0 to 250 DMs a day (150 recommended max). Start low on a newer account, keep quiet hours on, and only message people who commented and asked.

Do I need to keep my browser open?

No. The Chrome extension connects your account once at setup, and everything runs in the cloud after that.

Is there a ManyChat for LinkedIn?

ManyChat doesn't support LinkedIn, so the flow has to come from a LinkedIn-native tool. More in ManyChat for LinkedIn: The Complete Guide and the ManyChat alternative for LinkedIn comparison.