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LinkedIn InMail response rates have dropped as inboxes get more crowded, but the right approach still outperforms cold email significantly. InMails have a 10 to 25% hit rate when it comes to soliciting a response from potential clients, 300% higher than emails with the exact same content. In 2026, here is what separates InMails that get replies from the ones that get ignored.
InMail Credits: What You Get in 2026
Before diving into best practices, here is what you are working with on each plan:
Sales Navigator Core includes 50 InMail credits per month, with credits rolling over up to a maximum of 150 (three months' worth). This means if you do not use your credits one month, they accumulate, but only up to that 150 cap.
One important change from 2025: LinkedIn raised the price of additional InMail credits from $3 to $21 per credit in October 2025. Buying extra credits is now extremely expensive, which makes using your 50 monthly credits intelligently far more important than it was before.
LinkedIn InMail Best Practices
You cannot improve without knowing the basics. Although what works will vary by industry, persona, and product, there are some data-backed InMail best practices that always help.
How long should a LinkedIn InMail be?
LinkedIn’s own research into InMail success rates among recruiters saw a direct correlation between InMail length and response rate.
The response rate for the shortest InMails, those under 400 characters, is 22% higher than the average response rate for all InMails. By the same measure, the response rate for the longest InMails, those over 1,200 characters, is 11% below the average rate.
Shorter is better, but there is nuance. InMails twice as long, up to 800 characters, still receive above-average response rates, coming in at +5% above average. Even messages between 800 and 1,200 characters are only somewhat below the global average at -6%.
So do not treat 400 characters as a hard ceiling. If an extra sentence lets you include a relevant stat or social proof that convinces the prospect to reply, use it. Just keep messages below 800 characters where possible, and if you are writing InMails over 1,200 characters regularly, that is usually a sign your value proposition needs tightening, not your message length.
Only 10% of all InMails are under 400 characters, while nearly half (46%) are over 800 characters. That may be exactly why shorter InMails are so effective: they stand out from 90% of other InMails simply by their brevity.
What is the best time to send LinkedIn messages?
For the highest response rates, send your InMails midweek. InMails sent on Saturday get 8% fewer responses than average. Friday is not quite as bad, with a response rate 4% below average, but it is still significantly less effective than all other workdays. Tuesday to Thursday mornings, in the recipient's local time, consistently yield the best response rates. Messages sent Monday mornings or Friday afternoons see around 20% lower response rates.
As with every best practice, the right timing depends on your audience. If you are targeting senior executives, they often respond in the evenings or on Sundays when they are preparing for the week ahead. Very few InMails are sent on Sundays, so if you are using Salesflow, try scheduling Sunday sends for executive-level campaigns and compare the results against your midweek baseline.
What to include in a LinkedIn InMail subject line?
The best LinkedIn InMail subject lines hook readers with a clear value add, a resonant pain point, or a dose of intrigue, all in under 50 characters.
Keep in mind that the majority of LinkedIn traffic now happens on mobile, where subject lines get cut off earlier than on desktop. Front-load your hook in the first 25 to 30 characters to be safe.
Here are the approaches that consistently work:
Stand out. Do not be afraid to try a different approach if your usual messages are not getting results. A bold statement, an unusual angle, or a well-placed question is often polarising, but if it resonates with your audience, response rates can spike significantly.
Keep it short. Getting to the point forces you to examine your hook and make sure it is genuinely compelling. Aim for under 30 characters to be safe on mobile.
Ask a question. There is no better way to spark curiosity than with a question. Depending on your persona, you could try a direct approach like "Want to close more deals?" or a more empathetic question like "Struggling to generate pipeline?"
Lead with a stat. Show what you can do before they even open the message. "5 mins to 4x your revenue" or "Reach 3x more leads per week" are strong attention-grabbers, assuming the numbers are real and you can back them up.
Name-drop social proof. If you have worked with a competitor or a well-known company in your prospect's industry, use it. "We helped HubSpot 4x pipeline, let's talk about doing the same for you" has undeniable pull.
Beyond the subject line, add a personalised hook in the first sentence of the message. Explaining exactly why you are reaching out to this specific person right now is one of the highest-leverage things you can do. Did you share a group? Did they just get promoted? Did their company announce funding? Reference it directly.
Want proof of just how big a difference this makes? LinkedIn found InMails to shared group members received a 21% higher response rate than average.
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Personalisation: the single biggest lever
InMails that are sent individually see response rates roughly 15% higher than InMails sent in bulk. The data is clear: personalised, one-to-one messages outperform templated bulk sends consistently.
This does not mean you cannot use automation. It means the personalisation variables in your templates need to do real work. Referencing a shared group, a recent post, a job change, or a company announcement makes an automated message feel individual. Dropping in a first name and company name alone does not.
With Salesflow, you can create separate cadences for different campaign types and run them simultaneously, getting all the efficiency benefits of LinkedIn automation without compromising message quality.
LinkedIn's Focused Inbox: What It Means for Your InMails in 2026
LinkedIn has rolled out a focused inbox that prioritises messages from people the recipient already knows or has interacted with. InMails from cold senders are increasingly filtered into a secondary tab, similar to what Gmail did with the Promotions tab for email. Your InMail may be read significantly later than you expect, or missed entirely if the recipient rarely checks their secondary inbox.
Three things help your InMail land better and increase the chance of a reply:
View the prospect's profile before sending. LinkedIn's own data shows users are significantly more likely to accept an InMail from someone who has recently viewed their profile. It signals genuine interest rather than bulk prospecting.
Follow their company page before reaching out. Acceptance rates are measurably higher for senders who follow the prospect's company. It also keeps you updated on news and announcements you can reference directly in your message.
Have a complete, active LinkedIn profile. A complete profile with recent activity signals credibility. Prospects who receive your InMail will check your profile before deciding whether to reply. LinkedIn members are significantly more likely to accept InMail requests from users with a complete profile.
What’s the average LinkedIn InMail response rate?
Knowing industry averages helps you assess whether you need to tweak your targeting, your copy, or both.
According to LinkedIn's own Sales Solutions data, InMails have a 10 to 25% hit rate when it comes to soliciting a response, 300% higher than emails with the exact same content. If your response rates are consistently below 10%, something needs fixing, either your targeting, your copy, or both.
Performance varies significantly by industry:
Your industry and target persona affect your baseline significantly. According to LinkedIn's own research, industries with more in-person roles tend to see higher InMail response rates, while remote-friendly sectors like technology and SaaS tend to see lower ones. This is largely because tech professionals receive a much higher volume of automated outreach and have become more resistant to generic messaging. If you are selling into SaaS or technology, expect your baseline to sit at the lower end of the 10 to 25% range, and set your personalisation bar accordingly.
What counts as a good InMail response rate? Roughly 20% is average, and anything above 25% is strong performance. Note that responses include negative replies, so not every response leads to a real conversation. Focus on your qualified reply rate, the percentage of responses that represent genuine interest.
For LinkedIn Recruiter users, LinkedIn considers a response rate lower than 13% on 100 or more InMails sent within a 14-day period unusual enough to warrant a warning and potential temporary InMail suspension. While this threshold applies specifically to Recruiter, it gives a useful floor for what LinkedIn considers acceptable engagement.
Open InMail in 2026: A Critical Update
In late 2025, LinkedIn capped Open InMail sends to under 100 per month per account, down from a practical limit of roughly 800. That is an 87% reduction in outbound capacity through the Open InMail channel. The change was designed to reduce inbox pollution and preserve the quality of the InMail product.
Open InMail is still useful. Sending 100 free messages per month to opted-in prospects is a meaningful supplement to your 50 standard InMail credits. But teams that were using Open InMail volume as a primary outreach channel need to restructure their strategy around connection request campaigns and existing connection follow-ups.
Use your Open InMail credits for your highest-priority prospects, not as a bulk channel. See our full guide: LinkedIn InMail: How to Reach Open Profiles
How to improve your LinkedIn InMail response rate
To improve replies, you need visibility into what is actually happening with your messages. How many are being opened? How many are getting replies? How does this vary between campaigns?
Only admins with an Advanced or Advanced Plus Sales Navigator subscription can export a usage overview that includes InMail utilisation and acceptance rates. Individual sales reps have limited visibility through LinkedIn's native tools alone.
For campaign-level analytics including per-message open rates, reply rates, and positive versus negative reply tracking, Salesflow's analytics dashboard gives you the granularity you need. You can run two campaigns in parallel and compare results directly in the dashboard to A/B test subject lines, message length, or opening hooks without needing to export or cross-reference data manually.
Troubleshooting your InMail results
If you’re following the best practices for LinkedIn InMails and still not hitting industry averages, one of two issues is at play.
1. You need to rethink your strategy
Your copy is short, sharp, and snappy and persuasively addresses the obstacles your product solves. You’ve got a dazzling subject line. And you’ve sent enough messages to get accurate feedback, at just the right time to maximize the chance of getting a response. Why, then, is your LinkedIn reply rate so low?
If your copy is genuinely as good as you think it is, look a step higher. Okay, you mention obstacles , but are these concerns actually what these prospects care about? Have you validated you’re targeting the right persona or job title? Do your existing customers have similar characteristics and complain of similar issues?
If not, and you’re bringing a new product or feature to market and still assessing market fit, you’ll need to factor this into your plans to eventually see improvements. Rather than working on your copy, you need to validate you’re approaching the right audience.
It’s a tricky problem to solve. Start by speaking to your Sales teams, Customer Success department, and current customers to get a more accurate idea of pain points. Then, hone your ICP using LinkedIn Sales Navigator.
2. You need to rethink your copy
Okay, your customers say Point A is their biggest issue – but is it the issue that first hooked them on having a discovery call with your company? When on a sales call, they like to know every detail – but are they much less responsive over email, and do they need short requests that get right to the point?
Creating messaging that lands and has enough impact to lead to a discovery call is a delicate art. Best practices become a wide playing field.
If you know which profiles to target and have established product-market fit, you’re already doing well. To improve response rates and generate more leads in less time, you just need to iterate your messaging.
For both problems, to improve your InMail response rate you need to start A/B testing your campaign messages.
Let's get into a little more detail. What exactly is A/B testing, and why is it necessary to improve InMail response rates?
A quick guide to A/B testing
A/B testing means running two versions of a campaign in parallel to identify what drives better performance.
For example: you are sending an InMail campaign to 200 heads of sales. You send 100 of them subject line A, "HIPAA-compliant software that saves 4 hours per week", and 100 of them subject line B, "5 mins to 4x revenue?" After the campaign, compare the open rates. A meaningful difference gives you real data on which tone and hook resonates with your audience.
The benefits compound over time. By consistently A/B testing across campaigns, you build a validated outreach playbook with data-backed reasoning behind every decision. Once you have a strong open rate, test your opening line. Once engagement is solid, test your call-to-action copy.
Sounds complicated? It doesn’t have to be. Salesflow’s advanced analytics dashboard gives you automatic insights into the open, click-through, and response rates for all your campaigns – including LinkedIn InMails. Simply run your two campaigns in parallel using our LinkedIn automation software, then select both campaigns in the analytics dashboard to compare results
Need some LinkedIn outreach templates? Check out our downloadable PDF of 100+ LinkedIn messages that convert.
InMail Tips: Quick Wins to Improve Results
Get more InMails by targeting Open Profiles. You can message prospects with Open Profiles without using any InMail credits using a Salesflow Open InMails campaign. Note the monthly cap is now under 100 per month as of late 2025, so prioritise your best prospects.
View a prospect's profile before sending. LinkedIn's own data shows users are significantly more likely to accept an InMail from someone who has viewed their profile recently. Build this into your pre-send workflow.
Follow each prospect's company page. Acceptance rates are measurably higher for senders who follow the prospect's company. It also surfaces news and updates you can reference in your message.
Build out your LinkedIn profile and personal brand. LinkedIn members are significantly more likely to accept InMail requests from users with a complete profile. See our guides on creating an effective LinkedIn profile and building a personal brand on LinkedIn
5 InMail Templates That Work in 2026
These are starting points, not scripts to copy verbatim. The personalisation tokens in brackets are where the real work happens.
Template 1: The shared group opener
Subject: Quick question, {first_name}
Hi {first_name}, I noticed we are both in {group_name} and thought it was worth reaching out. We have been helping {ICP type} {specific result} and I wondered if it is a challenge you are facing too. Worth a quick 15 minutes?
Why it works: Shared context creates an immediate, genuine connection that cold outreach cannot replicate. It gives the recipient a clear reason why you reached out to them specifically rather than anyone else.
Template 2: The job change congratulation
Subject: Congrats on the new role
Hi {first_name}, just saw you joined {company} as {job title}, congrats. I imagine you are in the middle of evaluating what is working and what needs changing. We help {ICP type} {specific result}. Happy to share what we have seen work for similar teams if it would be useful?
Why it works: New hires have a mandate to improve things and are actively evaluating options. The message is timely and consultative rather than pushy.
Template 3: The stat-led cold InMail
Subject: {Company name} and {specific outcome}
Hi {first_name}, we recently helped {similar company} {specific result, e.g. book 3x more meetings in 60 days}. Based on what you are doing at {company}, I think we could do something similar. Worth 15 minutes to find out?
Why it works: Leads with a concrete, specific result. Named companies and real numbers outperform vague claims consistently.
Template 4: The content hook
Subject: Your post on {topic}
Hi {first_name}, saw your post on {topic} and you made a good point about {specific thing}. We are working on something directly related to that problem. Not sure if it is relevant, but would it be useful to compare notes?
Why it works: Proves you actually read their content. Positions the outreach as a conversation rather than a pitch, which dramatically lowers the perceived risk of replying.
Template 5: The funding or news trigger
Subject: Congrats on the {funding round/news item}
Hi {first_name}, noticed {company} just {announced funding/launched X/expanded into Y}, congrats. We have worked with a few companies at a similar stage to help them {specific result}. Would it make sense to connect and see if there is anything useful to share?
Why it works: Timing is everything. A message sent within days of a relevant news event feels genuinely timely. The same message sent three months later feels generic.
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