LinkedIn InMail tips for recruiters: how to get more replies

What are LinkedIn InMails, and how do they work for recruiters?

LinkedIn InMails are private messages you send to people outside your direct network. You use them inside LinkedIn Recruiter to approach candidates directly, even without an existing connection. These messages have a subject line of up to 200 characters and a body of up to 1,900 characters. Shorter messages tend to perform better regardless, especially on mobile.

An InMail is meant for candidates you specifically want to speak to. Sometimes you can send a message without spending an InMail credit at all, through an Open Profile message. That's only possible if both you and the recipient have a premium subscription. It's worth watching for this option when you're working a scarce talent pool.

Managing InMail credits and response rates wisely

With a LinkedIn Recruiter account you get a set number of InMail credits every month. Sending one message costs one credit. If you get a reply within 90 days, even a "no", you get your credit back. That's why it pays to write messages that make people more likely to respond in the first place.

By choosing your tone and content carefully, you don't just start the conversation, you also get more out of your InMail credits. Quality InMails deliver both better conversations and lower costs.

Why relevant LinkedIn InMail tips start with the right angle

A good InMail starts with relevance. Skip generic templates and ask yourself three questions every time: why this person, why now, and what exactly am I asking? Being specific is what increases your odds of a reply.

Noticed someone recently posted about Java or Scrum? Reference it briefly and connect it to your vacancy. That's a direct, human way to apply InMail personalisation without sounding over-engineered.

Structuring a good InMail: subject line, length and tone

The InMail subject line: short, recognisable and free of clickbait

The InMail subject line decides whether someone opens your message at all. Keep it short and clear, ideally between three and seven words. Avoid over-the-top claims or vague phrasing. Write "Java developer role in Manchester" rather than "Unique opportunity!!!".

Examples that land:

• "Senior Java role in Bristol"
• "Project for ICU nurses"
• "Controller wanted for hybrid team"

InMail length and structure: keeping your message readable on mobile

Although you can technically use up to 1,900 characters, most people read InMails on their phone. Short messages with one idea per paragraph work better. Aim for three to five short paragraphs. Get straight to the point about who you are, why you're writing and what you're asking.

InMail etiquette: a respectful tone and realistic assumptions

Write the way you'd want to be approached yourself. Avoid assumptions like "You must be ready for something new". Ask instead: "Would you be open to something else down the line?" Respect a "no" and invite feedback too. This builds trust, even when there's no match right now.

Practical LinkedIn InMail tips for opening lines and calls-to-action

The first two sentences: who you are and why you're reaching out

Start with something concrete. Say briefly who you are and why you're contacting this particular person. Reference something recognisable from their profile, such as a technology, location or a recent move. Avoid vague openers like "I saw your profile and thought of you".

InMail call-to-action: one clear question, a soft CTA for passive candidates

Close your message with one clear InMail call-to-action. Ask, for example, whether someone has time for a quick chat or is open to receiving more information. For candidates who aren't actively job hunting, a friendly, low-pressure CTA usually works better.

• "Would you be up for a ten-minute call about this?"
• "Can I walk you through a role that matches your experience?"
• "Even if you're not looking right now, I'd love to hear your take on the market."

LinkedIn InMail tips for follow-ups that don't feel annoying

An InMail follow-up is completely normal in recruitment. It all comes down to tone, though. Wait a few working days and send a short, new message with additional information. Never repeat, word for word, what you already said in the first message.

Example of a follow-up:

Avoid messages like this:

LinkedIn InMail tips to avoid spam while still working at scale

Avoiding LinkedIn spam starts with variation. Adjust your opening line and CTA per message, and never send the exact same text to everyone. Candidates notice quickly when something feels like a mass message. Working as a team? Make sure tone and style are aligned across everyone.

We often see teams missing the right balance between speed and human touch. This comes up a lot in conversations about the challenges recruitment agencies face in outbound sourcing. Good alignment within the team keeps messages both professional and personal.

GDPR-proof recruitment outreach through InMail

UK GDPR applies to InMail outreach too, so handle it clearly and transparently. Only use information you can see on LinkedIn itself and that's genuinely relevant to your message. Explain why you're getting in touch, and don't process data from outside LinkedIn unless it's strictly necessary.

Respect it when someone doesn't want to be contacted again. That's how you build a reliable, GDPR-proof recruitment outreach practice without adding unnecessary friction for candidates.

When do you choose a connection request, and when InMail?

A connection request is short and low-pressure. It suits a first point of contact well when there's no specific vacancy yet. Choose InMail when you need to share more context or need a response quickly.

Also check whether someone can receive an Open Profile message. You then send a full message without spending a credit at all. This is handy when you want to reach a lot of profiles with a targeted approach.

How a copilot in LinkedIn helps you keep up these LinkedIn InMail tips

Writing personal InMails matters, but it's also time-consuming. That's why we built a LinkedIn plugin as a Chrome extension. It helps you, or your whole team, stay fast and personal at the same time.

You simply select up to 25 profiles from your usual LinkedIn view. For each candidate you get a suggested message based on your own tone of voice. That way you can send personal InMails at scale without it ever feeling like bulk communication.

In a case study on less typing and more conversations, you can see how this helps other recruiters save time and lift their response rates.

InMail examples, templates and A/B testing for recruiters

A good InMail template is a starting point you always tailor to the recipient. Pay attention to industry, role and tone. Want to test different versions? Run an InMail A/B test. That means creating two short variants, for example with a different subject line or CTA, and seeing which one gets the most replies.

IT example:

Healthcare example:

Finance example:

The key LinkedIn InMail tips, and what to do next

The main takeaways from this guide, all in one place:

• Always start with relevance: why this person, and why now?
• Write a clear InMail subject line that's recognisable, not over the top.
• Keep your message short, three to seven paragraphs, built for mobile reading.
• Introduce yourself in the first two sentences and state why you're reaching out.
• End with a clear InMail call-to-action that's easy for the other person to answer.
• Send a maximum of two InMail follow-ups, each with something new, like a different role or angle.
• Use tooling to apply InMail personalisation at scale, without it ever feeling like spam.

Not sure about your current approach, or want an example checked? Get in touch. We're happy to think it through with you.