LinkedIn InMail is a powerful tool for reaching out to professionals beyond your immediate network. Unlike standard LinkedIn messages, InMail allows you to connect with any LinkedIn member, even if you're not connected. This opens doors for business development, recruiting, and networking with decision-makers who are otherwise hard to reach (LinkedIn Business Blog, 2024).
Mastering LinkedIn InMail means understanding what it is, how to craft messages that prompt responses, and using best practices to avoid common pitfalls. Let’s dive into how you can use InMail effectively to grow your network and generate opportunities.
What Is LinkedIn InMail?
LinkedIn InMail is a messaging feature exclusive to LinkedIn Premium and Sales Navigator users. It enables you to send direct messages to users outside your 1st-degree connections. Unlike regular LinkedIn messages, which require a shared connection or group, InMail cuts through those barriers.
Here are key facts about LinkedIn InMail:
- You get a fixed number of InMail credits per month—typically 5 to 30, depending on your subscription (LinkedIn Help Center, 2025).
- Unused credits roll over for a limited time.
- If your InMail message isn’t replied to within 90 days, LinkedIn refunds the credit.
- Messages can be up to 2000 characters, but shorter messages tend to perform better (LinkedIn Help Center, 2025).
Using InMail effectively can increase response rates by up to 10%, compared to cold emails (LinkedIn Marketing Solutions, 2024).
How to Write LinkedIn InMail Messages That Get Replies
Writing InMail that stands out requires a strategic approach. Here’s how to maximize your chances of getting a response:
1. Craft a Clear and Compelling Subject Line
Your subject line is the first thing recipients see. Make it concise and relevant.
- Use personalization: Include the recipient’s name or company.
- Avoid salesy language like "Buy now" or "Opportunity."
- Example: “Quick question about your work at [Company]” or “Loved your recent article on [Topic].”
2. Personalize the Opening
Start by showing you’ve done your homework. Reference something specific about the recipient’s profile, recent posts, or company news.
Example: “I noticed your recent post on remote team management and wanted to share an idea that might help…”
3. State Your Purpose Clearly and Early
Be upfront about why you’re reaching out. Avoid vague or generic messages.
Example: “I’m reaching out to explore potential collaboration opportunities between our teams.”
4. Keep It Brief and Focused
People are busy. Aim for 100-150 words max. Stick to one main message or ask.
5. Include a Clear Call to Action (CTA)
Make it easy for them to respond. Use simple CTAs like:
- “Would you be open to a 10-minute call next week?”
- “Can I share more details via email?”
6. Be Polite and Professional
Use a friendly tone but maintain professionalism. Avoid jargon or overly casual language.
7. Proofread Before Sending
Correct grammar and spelling errors increase credibility and response rates (LinkedIn Marketing Solutions, 2024).
"The LinkedIn algorithm rewards conversation, not broadcasting. The more genuine replies your post generates, the wider it travels." - Richard van der Blom, LinkedIn Algorithm Researcher, Author of the annual LinkedIn Algorithm Report
LinkedIn InMail Tips to Boost Your Response Rate
Beyond message structure, these tips will help you get noticed:
- Send InMail during business hours: Messages sent Tuesday-Thursday between 9 am-12 pm get higher responses (Richard van der Blom, 2025).
- Limit follow-ups: One polite follow-up after a week is acceptable. More can be intrusive.
- Use InMail credits wisely: Target highly relevant prospects rather than mass sending.
- Leverage mutual connections: Mention shared contacts if applicable.
- Avoid attachments: LinkedIn doesn’t allow them in InMail, but you can include links to relevant resources.
LinkedIn InMail vs. Regular LinkedIn Messages
Understanding the difference helps you decide when to use InMail versus free messaging.
| Feature | LinkedIn InMail | Regular LinkedIn Messages |
|---|---|---|
| Recipient | Any LinkedIn user | Only 1st-degree connections |
| Availability | Requires Premium or Sales Navigator | Free for all users |
| Message Limits | Up to 2000 characters | Up to 3000 characters |
| Credit System | Yes, limited monthly credits | No credits required |
| Response Refund | Yes, refunded if no reply within 90 days | Not applicable |
| Best Use Case | Cold outreach to prospects | Messaging existing contacts |
Use regular messages whenever possible to save InMail credits for high-value outreach.
Boost Your LinkedIn Outreach with HookTide’s Connection Composer
Writing effective InMail can be challenging, especially when you want to personalize at scale. Try our free Connection Composer to craft tailored LinkedIn messages quickly. It helps you generate engaging, personalized outreach that aligns with the best LinkedIn InMail tips.
For more on crafting messages that get replies on LinkedIn, check out our detailed guide on how to write LinkedIn DMs that get replies.
Frequently Asked Questions
What is the character limit for LinkedIn InMail messages?
LinkedIn InMail messages have a character limit of 2,000 characters (LinkedIn Help Center, 2025). However, keeping messages between 100-150 words is recommended to increase the chances of a response.
How many InMail credits do I get per month?
The number of InMail credits depends on your LinkedIn subscription. Premium Business accounts typically get 15 credits per month, while Sales Navigator users can receive up to 30. Unused credits roll over for a limited time (LinkedIn Help Center, 2025).
Can I send InMail messages to someone I’m already connected with?
No, InMail is designed for messaging LinkedIn members outside your 1st-degree network. For your connections, you can send regular LinkedIn messages without using InMail credits.