LinkedIn InMail is one of the most powerful direct outreach tools available to HR professionals, talent acquisition teams, and sales professionals today. In a world where the best candidates are often not actively job searching, InMail makes it possible to reach, and engage, passive talent directly on the world’s largest professional network.
Whether you are a recruiter filling a niche role, a hiring manager building a talent pipeline, or a business development professional prospecting new leads, understanding how InMail works, and how to write messages that actually get responses, is a critical professional skill.
This glossary covers everything you need to know: from the basic what is in-mail meaning and how LinkedIn InMail credits work, to best practices that improve response rates and common mistakes that kill them.
What Is In Mail: Understanding LinkedIn InMail?
LinkedIn InMail is a private, direct messaging feature on LinkedIn that allows users to send messages to any LinkedIn member, even people they are not connected with. Unlike a standard LinkedIn message, which can only be sent to first-degree connections, an InMail message bypasses the connection requirement entirely, enabling outreach to second and third-degree connections, as well as complete strangers on the platform.
InMail was introduced by LinkedIn specifically to bridge the gap between professionals who want to make contact and those who have not yet connected.
Quick Definition:
LinkedIn InMail is a paid, private messaging feature that lets you send direct messages to any LinkedIn member regardless of connection status. It is widely used for recruiter outreach, candidate sourcing, sales prospecting, and professional networking.
How Does LinkedIn InMail Work?
InMail operates on a credit-based system. Each InMail message you send consumes one credit from your monthly allocation. The number of credits you receive depends on your LinkedIn subscription tier. Here is how the process works end to end:
After you send an InMail, the recipient receives the message in their LinkedIn inbox and can choose to reply, ignore, or take other actions. Some platforms, such as internal In Mail systems, include features like read receipts and acknowledgment tracking to ensure important communications are received and confirmed.
Sending an InMail Message
Navigate to any LinkedIn profile, connection or non-connection
Click the ‘Message’ button (connections) or ‘InMail’ button (non-connections)
Compose your InMail with a subject line and body text. When you write your InMail, focus on crafting a personalized subject line and a concise, relevant message body to increase engagement.
Subject line limit: 200 characters
Message body limit: 1,900 characters (approximately 300–350 words)
Click Send – one InMail credit is deducted from your account
What Happens After Sending
The message is delivered to the recipient’s LinkedIn inbox immediately
The recipient may also receive an email notification, depending on their privacy settings
The recipient can choose to respond, ignore, or decline the message
Credit refund: If the recipient responds within 90 days, LinkedIn refunds the credit used, making active, quality outreach self-sustaining over time
Privacy protection: The sender never receives the recipient’s email address. Both parties’ contact details remain protected.
Key Mechanic:
InMail credits are refunded when recipients respond. This incentivises writing personalized, relevant messages, the better your messaging quality, the more credits you effectively recover each month.
Benefits of Using InMail
One of the standout benefits of using InMail is the ability to send highly targeted messages to LinkedIn users who are not already part of your network. This feature empowers recruiters and hiring managers to connect directly with potential candidates who may not be actively seeking new opportunities but are open to hearing about compelling roles. By reaching beyond first-degree connections, recruiters can expand their reach and tap into a broader talent pool, increasing the chances of finding the right fit for a specific job description.
InMail messages are delivered straight to the recipient’s LinkedIn inbox, making them more likely to be noticed compared to other forms of outreach. This direct approach ensures that your message stands out and is received in a professional context, which is especially important when introducing your company culture or outlining the unique aspects of a role.
InMail vs. LinkedIn Message vs. Connection Request vs. Email
Recruiters and HR professionals often debate which outreach channel is most effective. Here is a direct comparison:
Feature | LinkedIn InMail | LinkedIn Message | Connection Request + Note | |
|---|---|---|---|---|
Requires connection | No | Yes (1st degree only) | No | No (with address) |
Character / word limit | 1,900 chars + subject | Unlimited (1st degree) | 300 chars (note only) | Unlimited |
Subject line | Yes | No | No | Yes |
Cost to sender | 1 InMail credit | Free | Free | Free |
Inbox visibility | LinkedIn inbox + email alert | LinkedIn inbox only | Notifications only | Email inbox only |
Avg. response rate | 10–25% (varies by quality) | Higher — warm contact | Lower | Highly variable |
Best used for | Passive candidates, senior roles, niche talent | Warm follow-ups | Initial network building | Post-connection follow-up |
LinkedIn InMail in Recruitment: Why It Matters for HR Teams
For talent acquisition and HR professionals, LinkedIn InMail is not just a messaging tool, it is a core component of modern candidate sourcing strategy. Here is why it holds a prominent place in recruitment workflows:
Reaching Passive Candidates
Research from LinkedIn Talent Solutions consistently shows that the majority of the workforce is passively open to new opportunities but not actively applying. Discussing the position directly with interested candidates through InMail is crucial, as it increases engagement and helps assess fit before moving forward. InMail is the primary channel through which recruiters can reach this segment directly and personally.
Bypassing the Application Funnel
Traditional job postings attract only active candidates. With InMail, recruiters can proactively identify and approach high-fit candidates based on their LinkedIn profile data, skills, experience, certifications, and location, before they ever see a job posting.
Personalised Candidate Experience
A well-crafted InMail signals to a candidate that they were specifically selected, not mass-blasted. This personalised touch meaningfully improves candidate engagement and employer brand perception, particularly for senior or specialist roles.
Integration with LinkedIn Recruiter
LinkedIn Recruiter, LinkedIn’s enterprise talent acquisition platform, provides HR teams with advanced InMail capabilities, including bulk InMail sending, message templates, InMail analytics (open and response rates), and integrated pipeline management. For high-volume recruiter outreach, LinkedIn Recruiter’s 150 monthly credits make it far more scalable than individual Premium plans.
InMail Response Rate Benchmarks
Outreach Type | Avg. Response Rate | Key Driver |
|---|---|---|
Generic InMail – no personalisation | ~5–10% | Low — template fatigue from recipients |
Partially personalised InMail | ~15–20% | Moderate — shows basic research was done |
Highly personalised InMail | ~25–40% | High — specific, relevant, and concise |
InMail to Open Profile members | ~30–45% | Higher receptivity from pre-opted-in members |
Follow-up InMail (2nd message) | +5–10% incremental lift | Persistence plus better timing |
Source: Figures are indicative industry benchmarks. Actual rates vary by industry, role level, and message quality.
Types of LinkedIn InMail Messages & When to Use Each
1. Recruiter Outreach InMail
Used to approach passive candidates for open roles. Focused on a specific position, tailored to the individual’s background, and designed to initiate a conversation rather than close a hire.
2. Talent Pipeline InMail
Used to build long-term relationships with high-potential candidates who are not right for a current role but may be ideal in the future. Tone is relationship-first, not position-specific.
3. Sales Prospecting InMail
Used by sales and business development professionals to connect with potential clients or decision-makers. Leads with a clear business value proposition rather than a job opportunity.
4. Employer Branding InMail
Used to share company updates, content, or initiatives with a targeted professional audience. Often used in conjunction with LinkedIn Campaign Manager for broader reach.
5. Event or Webinar Invitation InMail
Used to personally invite industry professionals to events, webinars, or community sessions. Converts well when the event topic is directly relevant to the recipient’s professional focus.
Best Practices for LinkedIn InMail Message
To maximize the effectiveness of your InMail outreach, it’s essential to follow a few best practices. Start by crafting a compelling subject line that is both personalized and relevant to the recipient’s profile, using their name and referencing specific skills or experiences can significantly increase open rates. Keep your message concise and clear, focusing on the value you’re offering and avoiding the lengthy, generic style often found in traditional emails.
Leverage LinkedIn’s specific platform features, such as Sales Navigator, to identify and segment your audience for more targeted outreach. This tool can help recruiters and sales professionals send InMail messages to the right people at the right time. Additionally, consider the importance of timing and use mobile devices to send messages when recipients are most likely to be active on LinkedIn. By understanding your recipient’s profile and tailoring your approach, you can create more effective InMail messages that drive higher response rates and foster genuine connections.
InMail Security
LinkedIn prioritizes the security and privacy of its users, and InMail is designed with several safeguards to protect both senders and recipients. Each user is limited to a specific number of InMail messages per month, which helps prevent misuse of the system and reduces the risk of spam. Additionally, recipients have full control over their inbox, they can choose to accept, ignore, or decline InMail messages, ensuring that only relevant and welcome communications reach them.
Conclusion
InMail stands out as a premium feature for LinkedIn users and recruiters aiming to connect with potential candidates and grow their professional network. By understanding what is in mail and how to craft effective InMail messages. By leveraging the platform’s unique features, recruiters can enhance their recruitment strategies and achieve better results. The ability to reach beyond your immediate network, combined with robust security measures, makes InMail an essential tool for anyone involved in recruitment or professional networking.
Frequently Asked Questions (FAQs)
What is InMail for LinkedIn?
LinkedIn InMail is a paid private messaging feature that lets you contact any LinkedIn member, even outside your network. It’s most commonly used by recruiters and sales professionals for direct outreach.
What is the difference between InMail and message on LinkedIn?
Regular LinkedIn messages can only go to your first-degree connections. InMail can reach anyone on the platform, regardless of connection status. InMail also has a subject line; regular messages don’t.
Is InMail private on LinkedIn?
Yes. InMail is a private one-on-one message, visible only to the sender and recipient. Your personal email address is never shared, and the conversation doesn’t appear on your public profile.
Is LinkedIn InMail paid?
Yes, sending InMail requires credits, available only on paid LinkedIn plans. Free accounts can’t send InMails. The one exception: if a recipient has an Open Profile enabled, anyone can message them at no credit cost.