Sendio Capture: Turn Your Own LinkedIn Posts Into a Lead Table

Install it, connect it, and pull your warmest list in about five minutes.

Every post that performs leaves a list behind it: the people who reacted and the people who commented. Sendio Capture is a browser extension that turns that list, plus any Sales Navigator search, into leads and companies inside your Sendio workspace. It runs in the tab you already have open, in your own logged in session, and it only moves when you click.

Here is the whole setup, in order.

Before you start

You need a Sendio workspace with Capture enabled, which the Sendio team switches on workspace by workspace. Chrome or Edge, version 116 or newer. The extension is not in the Chrome Web Store yet, so you will load the folder yourself, which is the two extra clicks in step 1.

1. Install the extension

Everything starts from the Sendio Capture card in Settings, Capture extension. The card shows in real time whether the extension is installed and connected in the browser you are looking at.

1. Click Download and unzip the file.

2. Open chrome://extensions and turn on Developer mode.
3. Click Load unpacked and pick the folder you just unzipped.
4. Go back to Sendio and click Connect.

Steps two and three only show up after the download, and they disappear once Sendio detects the extension.

Two things to do right after: pin the fox icon to your Chrome toolbar, since that is how you open the status popup later, and reload any LinkedIn tabs that were already open. The script is not injected into tabs that loaded earlier. Capture will tell you when that happens ("Sendio Capture was updated. Reload this page to use it.") with a reload button.

2. Connect it to your workspace

Step 1 already did this, so read this part only if the connection drops or you switch browsers.

Click Connect Sendio from any of three places: the extension icon, the panel inside LinkedIn, or the card in Settings. It opens app.sendio.ai/extension/connect, where you need to be logged in. The icon then shows Connected with your workspace name.

The session lives only in the extension's service worker, so no LinkedIn page can see your Sendio credential. Disconnect is in the same popup.

If you get "Your workspace doesn't have Sendio Capture enabled yet", the connection worked and the feature flag is missing. Ask the Sendio team, do not reinstall.

3. Capture the people who engaged with a post

This is the main event. Start with your best performing post from the last month.

1. Open the post itself, through its date or permalink, not the feed. The URL needs an activity id.
2. Click the orange Sendio Capture pill in the bottom left corner to open the panel.
3. Pick Reactors, Commenters, or both. Capture prepares the page for you, scrolling until comments load and opening the reactions counter.
4. Set the quantity. Shortcuts for 25, 50, 100 and 250, default 50, ceiling of 500 per capture.
5. Choose New table or Existing table. Leave the name blank and the table is named after the post.
6. Capture, then click Capture leads.

Each row arrives with the profile URL, name, headline, and engagement_type, either REACTION or COMMENT. That last one becomes a column, so you can write one opener for the people who typed a comment and another for the people who only tapped like.

Capturing the same post again into the same table does not duplicate anyone, because the public profile URL is the key.

4. Capture a Sales Navigator search

For people: build your filter on linkedin.com/sales/search/people, let the results load, then open the panel and set a quantity. Rows arrive with title, company, region, and connection degree already filled, because Sales Navigator results are structured. Capture reads 25 per page with a pause of 3 to 7 seconds between pages, so 100 leads take a minute or two. Anyone whose public profile cannot be resolved is dropped on purpose, so you never end up with a link that will not match the rest of your database.

For companies: same flow on linkedin.com/sales/search/company, and this one lands in a company table with the domain attached. Only companies with a website are stored, which is why progress reads like 12/50 · 30 checked. Budget about a minute per 50 companies.

That domain is the reason to use this instead of copy and paste. Sendio anchors all company data on it: it is the dedupe key, the enrichment cache key, and the only field that stitches company data back onto your leads. The "Visit website" button on LinkedIn is not markup, it is a field in an API response, so Capture reads it directly without opening a single company page, and it costs you no credits.

5. Clip one person or one company

When you want one profile instead of a list, hover the photo anywhere on LinkedIn (feed, comments, reactions dialog, search results, profile header, Sales Navigator card). A small fox badge appears on the corner of the image. Click it, pick a table, click Clip.

Company logos work the same way, and the popup shows you the domain it resolved. A clip saves even when there is no website, it just tells you the row cannot be enriched.

6. Turn on enrichment, if you want it

Every mode has an Enrich toggle and it starts off.

Turned on, it runs after your rows are already saved and fills the blanks: title, company, industry, email, company domain, role start and tenure, seniority, company size, and more. It never overwrites what you captured from LinkedIn.

Cost is 0.25 credit per person and 0.25 per distinct company domain, so ten leads from the same employer pay 0.25 for the company half, once. Anything the source cannot answer is refunded. And because the capture is written first, a failed or interrupted enrichment still leaves your full table intact.

Limits worth respecting

Capture runs on your real LinkedIn account, which is what makes it work and why the pacing is not decoration.

Guard	Value
Default per capture	50
On screen warning	Above 100
Hard ceiling	500
Pause between search pages	3 to 7 seconds
Any LinkedIn error or checkpoint	Capture stops immediately

Capturing 500 people five times in one afternoon is a pattern LinkedIn notices. Smaller captures, spaced out, on the posts that deserve it.

Capture never reacts, comments, connects, or messages for you, never runs on a schedule, and never puts anyone into a campaign. Rows land in a table and stop. Sending stays your decision, in the app.

If something looks stuck

What you see	What to do
"Reload this page to use it."	The tab loaded before the extension updated. Click Reload page
Reactions came back empty	Open the post's reactions dialog yourself once, close it, capture again
"Open a LinkedIn post…"	The URL has no activity id. Open the post through its date or permalink
"Apply a filter in Sales Navigator…"	Results have not loaded yet. Apply a filter, wait, reopen the panel
"LinkedIn stopped the request"	You hit a limit. Stop, wait a few hours, return with less volume. What was captured is saved
Fewer rows than you asked for	Unresolvable profiles and companies with no website are dropped on purpose

Your first five minutes

Install, connect, open your best post from the last month, capture reactors and commenters into one table with 50 as the quantity. Then write two openers, one for each engagement_type, and reference the post itself in both, because you know exactly what those people read.

That is a list of people who publicly raised their hand about your topic in the last thirty days. No database sells that.

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