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Saniya Sood
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Published September 8, 2026 · Updated September 8, 2026
The answer up front: the people who like and comment on LinkedIn posts are the warmest outbound audience that exists - they raised their hand in public - and LinkedIn gives you no native way to export them. So the workflow is always capture, then message. The tools split three ways: capture-only (Trigify from $40/mo, Clay from $167/mo - they build the list, you bring a sender), capture-and-send (HeyReach $79/sender imports a post's reactors natively, Waalaxy from €19/mo imports commenters), and signal-to-conversation systems (Valley - this site's publisher - which watches the signal, researches each person, and writes the message for your approval). Below: what each actually does, the manual method that costs nothing, and the LinkedIn-rules fine print nobody puts next to their pricing.
Disclosure: Valley (this site's publisher) works this signal natively, so Valley is a vendor in this list. The comparison covers everyone honestly, including where a cheaper or narrower tool is the better fit.
How Valley knows this: Valley runs outbound for 1,000+ LinkedIn accounts and has sent 30M+ messages, most of them triggered by exactly these signals. Every tool fact below was verified September 8, 2026 against the vendor's live pages; every LinkedIn capability was checked against LinkedIn's own help documentation the same day.
► Skip the plumbing: Valley watches your post engagers and drafts the outreach - free for 7 days
Give your sales team
an unfair advantage.
First, what LinkedIn itself allows (verified September 8, 2026)
You can SEE every reactor and commenter on any public post - click the reaction count and the full list opens, scrollable, with names and headlines. You cannot EXPORT it: there is no download for post interactions, and even Company Page analytics exports contain aggregate counts only, never identities. On very large posts, the reactor list stops loading around ~3,000 profiles. Everything beyond manual viewing therefore runs through third-party capture - which is exactly what LinkedIn's User Agreement (section 8.2) prohibits when automated. That tension is real and every honest page about this topic says so: the manual method is the only fully rules-safe path; every automated tool adds risk you should size deliberately.
The tools, by what they actually do
Tool | Captures | Sends too? | Price (verified Sep 8) |
|---|---|---|---|
Trigify | Likers + commenters, any post incl. competitors'; topic and keyword tracking | No - routes to Slack/CRM/your sender | $40/mo (4,000 credits) to $199/mo |
Clay | 'Find Post Audience' per post URL - reactions and comments | No - enriches, then pushes to a sender | Free tier; Launch from $167/mo |
PhantomBuster | Likers + commenters exports, any post (~3,000 cap) | Separate connect/message automations can chain | $69-439/mo |
TexAu | Likers + commenters extractors, cloud-run | Yes - chainable invites/messages | $79-549/mo |
HeyReach | Native import of a post's REACTORS (their own docs: not commenters) | Yes - multi-account sender | $79/mo per sender |
Waalaxy | Auto-import of COMMENTERS (likers import 'coming soon' per their blog) | Yes - invite + message campaigns | €19-69/user/mo |
Valley (us) | Post engagers on your posts and profiles you track - captured continuously, not per-URL | Yes - researches each person (200+ sources), writes in your voice, you approve every send | $149/mo billed quarterly |
Two precision notes most listicles get wrong, from the vendors' own documentation: HeyReach's native post import pulls reactors only - commenters come in via CSV or a Clay/Trigify feed - and Waalaxy's likers import is still "coming soon" on its own blog; today it imports commenters. If a workflow depends on both halves of engagement, check which half your tool actually captures.
The manual playbook (free, and fully within the rules)
1. Open the post - yours or a competitor's; the lists are public either way. Click the reaction count for the full reactor list; switch comments to "Most recent."
2. Log each relevant person in a sheet: name, title, company, what they engaged with, date. Ten minutes per post once you are quick.
3. Message 1st-degree connections directly, referencing the post and the specific thing they reacted to. Send connection requests with a short note to 2nd/3rd degrees.
4. Do it within 48 hours - engagement is a timestamp, and the warmth decays fast.
Does it actually work? The honest numbers
The best citable result: a Smartlead-published case study of Trigify-sourced engagement lists reporting a 28% reply rate (19% positive) - vendor-published, but consistent with the physics. For contrast, cold email replies average ~3.4% (Instantly's benchmark data). Valley's own operating data across 30M+ messages puts warm, signal-based outreach at 15-45% reply rates against a ~2% category average, with methodology in Valley's reply-rate benchmarks report. A public reaction is not a buying signal by itself - it is a timing-plus-familiarity signal, which is exactly what makes a first message land.
Give your sales team
an unfair advantage.
Manual and free: the playbook above. List-building for an existing sender stack: Trigify or Clay. One tool that captures AND sends at volume: HeyReach (reactors) or Waalaxy (commenters). The signal watched continuously, researched, written in your voice, with you approving every send: Valley. Related: turning post engagement into booked calls · tracking competitor post engagers.
See also: Allbound, Explained: One Motion Where Content Creates the Outbound List · LinkedIn Profile Viewers: What You Can See, and How to Turn Views Into Pipeline · LinkedIn Post Scraper: How to Pull Any Post's Engagers and Message the Best Fits
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FAQ
Can I export people who liked my LinkedIn post? Not natively - LinkedIn provides no export for post interactions, and Page analytics exports are aggregate-only. Third-party tools (Trigify, PhantomBuster, TexAu, Clay) capture the list via automation, which sits outside LinkedIn's user agreement - a risk to size, not ignore.
Can I see who engaged with a competitor's post? Yes - reactor and commenter lists on public posts are visible to anyone, which is what makes this the most underrated prospecting surface on LinkedIn. Full guide: competitor post engagers.
What reply rates does engager outreach get? The one published case study reports 28% replies (Smartlead x Trigify); our own 30M-message dataset shows warm signal-based outreach at 15-45% vs ~2% for cold. Treat vendor numbers as vendor numbers - including ours; that is why we published the methodology.
Is scraping post engagers against LinkedIn's rules? Automated collection is prohibited by LinkedIn's User Agreement section 8.2. Manual viewing and logging is fully allowed. Everything between is a risk decision - make it knowingly, keep volumes human, and never run tools that need your password.
Can you message post engagers with video instead of text? Yes - a short personal video that references the post they engaged with, or the specific signal, shows the human side of signal-based prospecting and is hard to ignore. Full guide: signal-triggered video prospecting.
How does Valley handle this signal? Valley watches engagement continuously, qualifies each engager against your ICP, researches them across 200+ sources, and drafts outreach in your voice across LinkedIn and email - you approve every message, or let vetted sequences flow. 7-day free trial, card required.
Related: turning LinkedIn post engagers into outreach.
The full signal map: every B2B buying signal, ranked by distance from the buyer.
