How to message a candidate who works at a company on LinkedIn

Generic InMails get ghosted. Here's how to write personalized LinkedIn messages that passive candidates at target companies actually respond to — with stats on length, subject lines, and signals to watch for.

How long should my LinkedIn InMail be to get the best response rate?

Aim for under 400 characters — LinkedIn data shows that's where response rates peak, and SalesSo reports a 22% boost at that length. Messages up to 800 characters still perform above average, so don't panic if you need a few more sentences.

What makes a personalized subject line effective on LinkedIn?

Reference something specific about the candidate — their company, a mutual connection, or a detail from their profile. According to SalesSo, that specificity alone boosts response rates by 30.5% compared to generic subject lines.

Why am I getting ghosted after sending InMails?

Candidates are almost certainly opening your messages — open rates are high — but generic content gives them no reason to reply. Personalization that shows you actually read their profile is the single biggest lever you can pull.

What happens if my LinkedIn InMail response rate drops too low?

LinkedIn requires recruiters to maintain at least a 13% response rate across 100 or more InMails in any 14-day period. Fall below that and you'll enter a warning period; stay below it and bulk InMail access gets suspended for two weeks.

How to Message a Candidate on LinkedIn Who Works at a Company

How to Message a LinkedIn Candidate Who Already Has a Job

If the candidate has the Open to Work signal active, or shows up as a Recommended Match in LinkedIn Recruiter (a platform feature that surfaces candidates likely open to outreach), treat that as a green light and lead with something specific — their role, a recent project, a shared connection. If they don't have those signals, it's not a dealbreaker, but your message has to work harder. Either way, keep it short and make it clearly about them, not your req.

Here's what LinkedIn's own data and sourced research actually say about what moves the needle:

Message Length: Shorter Wins, But Not Impossibly Short

According to the LinkedIn Talent Blog, InMails under 400 characters get above-average response rates — and you're already standing out just by being brief, since only 10% of all InMails are that short. Messages up to 800 characters still earn above-average (+5%) response rates. It's only once you push past 1,200 characters that things start to fall off a cliff.

For a different data point: SalesSo — a LinkedIn outreach software vendor, worth noting — reports that messages under 400 characters see a 22% boost in response rates, attributing it to the fact that short messages fit on one mobile screen without scrolling. Whether you use LinkedIn's framing or SalesSo's specific figure, the directional advice is the same: shorter is better, and under 400 characters is the sweet spot.

Personalization: The Stat That Actually Matters

SourceGeek, citing LinkedIn data, reports that personalized InMails receive 15% higher response rates than bulk-sent messages. That gap compounds fast when you factor in that 63% of people never respond to non-personalized messages at all — meaning two-thirds of your target list is effectively invisible to generic outreach.

Personalized subject lines do the heavy lifting at the top of the funnel. According to SalesSo, referencing something specific about the candidate, their company, or a mutual connection boosts response rates by 30.5%. The first 15 words of your message are doing the same job — they're the difference between a candidate thinking "this recruiter gets it" versus "delete."

Open Rates Are Not Your Problem

SalesSo (again, a vendor with a commercial interest in promoting LinkedIn outreach) reports that InMail open rates average 57.5% and can reach as high as 85%. Take that range with appropriate skepticism given the source, but the core point holds: candidates are seeing your messages. They're just not compelled to respond. Visibility isn't the bottleneck — your content is.

Don't Let Your Response Rate Slip Below 13%

LinkedIn enforces a minimum InMail response rate threshold. Per LinkedIn Recruiter Help, if you send 100 or more InMails in a 14-day period and your response rate drops below 13%, you'll enter a warning period. Let it stay below 13% and your bulk InMail access gets restricted for two weeks. This isn't just an abstract metric — it has direct consequences on your workflow.

A Simple Framework for Each Message

Open with a specific hook: Something from their actual profile — a quote, a project, a tenure detail, a shared connection. Not their job title, which you obviously already know.
State the opportunity in one sentence: What's in it for them? Career growth, compensation, something they can't get where they are now.
One clear call to action: "Do you have 15 minutes next week?" Full stop. Don't ask multiple questions.
Keep it under 400 characters if you can: If you can't, aim for under 800. If your draft is over 1,200, start over.

Passive candidates aren't ignoring you because they're impossible to reach. They're ignoring you because your message reads like it was written for anyone. Fix that, and your response rate will reflect it.