Every LinkedIn seller hits the same wall eventually. You find the perfect prospect, you go to send the message, and you are out of InMail credits for the month. LinkedIn does not top you up, it does not sell you a top-up on Sales Navigator, and your only options are to wait until the billing date or switch to a different channel.
I run LinkedIn outreach for clients at KomsGro, and the InMail ceiling is one of the most misunderstood numbers in outbound. People either treat credits as unlimited (and waste them on the first fifty people in the search results) or as so precious that they never send any. The truth is in the mechanics: how many credits you get, how the rollover and refund rules work, and what an InMail is actually worth per send.
Here is the full picture of InMail credits, and how to make each one count.
What an InMail credit actually is
An InMail is a message that bypasses the connection requirement. Normally, to message someone on LinkedIn, you need them to accept a connection request first. An InMail lets you message someone who is not in your network, and it lands in their inbox as a priority message.
A credit is the currency that buys one of those messages. You spend one credit per InMail sent, and there is no way to send an InMail without one. That is the whole system: credits in, messages out.
Two things make InMail different from a normal LinkedIn message. First, it reaches people outside your network, which is the entire point for outbound. Second, LinkedIn refunds the credit if the person replies. That refund rule quietly changes the economics, and most people do not account for it.
How many InMail credits you get by plan
The allocation depends entirely on which LinkedIn plan you pay for. Here is the current breakdown:
| LinkedIn plan | InMail credits per month |
|---|---|
| Premium Career | 5 |
| Premium Business | 15 |
| Recruiter Lite | 30 |
| Sales Navigator Core | 50 |
| Sales Navigator Advanced | 50 |
| Sales Navigator Advanced Plus | 50 |
| Recruiter (Corporate) | 150 |
The important detail for sellers: every Sales Navigator tier includes the same 50 InMails per month. Core, Advanced, and Advanced Plus differ on search depth, CRM sync, and team features, but not on InMail volume. Upgrading from Core to Advanced does not give you more credits.
For most individual sellers and founders, Sales Navigator Core at $119.99 per month is the plan, and 50 InMails per month is the ceiling. Advanced runs $159.99 per month and still caps at 50.
If you are on Recruiter Corporate, you get 150 per month, which is the only plan that meaningfully changes the volume math.
The rollover rule (why unused credits are not wasted)
LinkedIn lets unused InMail credits roll over, up to a maximum of 150 total credits. So if you send only 20 InMails in a month, the other 30 carry forward, and your balance grows until it hits 150.
There is a second rule underneath the first: rolled-over credits must be used within 90 days. Credits do not sit in the bank forever. A credit that is about to expire is worth sending, even to a lower-priority prospect, because an expired credit is worth zero.
The practical implication: if your balance is near 150, you are not “saving” credits, you are letting them expire. If your balance is near zero, you are running hot and should either slow the cadence or move the overflow to email.
The reply refund (the rule that changes the math)
Here is the mechanic that most sellers miss: if the person replies to your InMail, LinkedIn returns the credit to your account. The InMail did not cost you anything, because it generated a conversation.
This means your effective credit cost is not 50 credits for 50 InMails. It is 50 credits for 50 InMails minus every reply you receive. At a 10 to 15 percent reply rate, that is 5 to 8 credits refunded per month, so you actually get 55 to 58 sends out of your 50.
The strategic read is straightforward: a reply-first InMail strategy is not just better for pipeline, it is cheaper. Every message designed to earn a reply pays for itself. Every message that gets ignored costs you a full credit.
What an InMail actually costs
At Sales Navigator Core’s $119.99 per month for 50 credits, each InMail costs about $2.40 before refunds. With a 10 percent reply rate refunding 5 credits, the effective cost drops to roughly $2.18 per send.
Compare that to cold email, where you can send hundreds of messages a day from mailboxes that cost a few dollars each, and the InMail economics look bad in isolation. But InMail buys something email does not: it reaches the person inside the platform where they are already active, and it carries the “priority message” flag.
The right frame is not “InMail versus email.” It is “which prospects deserve the $2.40 channel.” High-value, hard-to-reach buyers are worth an InMail. Everybody else goes on email.
How to make each credit count
Fifty credits a month is enough to run a real program, if you treat each one as a paid send. The practices that protect the credit:
Target ruthlessly. Before you spend a credit, confirm the person matches your ICP on role, company size, and the trigger you are writing about. An InMail to a loosely matched prospect is $2.40 gone.
Keep it to three sentences. The first sentence is the reason you are reaching out (the trigger). The second is what you do or what you noticed. The third is the ask. InMails are read on mobile, between meetings; long ones get archived.
Give them a reason to reply, not just to read. The reply refund means your goal is a response, not a click. Ask one low-friction question, not for a 30-minute meeting. “Worth a quick look?” outperforms “Do you have time for a demo next week?” when the goal is to start a conversation.
Do not pitch in the first InMail. The same rule that governs cold email applies here: earn the reply first, sell second. A reply refunds the credit and opens the thread.
Track the reply rate per credit. If 50 InMails produce two replies, the channel is mis-targeted or the message is wrong. If they produce eight, the program is working and the refunds are funding extra sends.
InMail or connection request?
This is the decision that determines your credit burn. The rule I use with clients:
- InMail when the prospect is high-value and you cannot afford to wait for a connection acceptance, or when your connection requests are already at the weekly ceiling.
- Connection request when the prospect is reachable through the normal network path. A request costs nothing (the weekly limit is roughly 100 to 200, and it resets), and a personalized first line gets accepted at a higher rate than most people expect. The limits are covered in how many connection requests per day on LinkedIn.
The mistake is spending credits on people you could reach with a free request. Save InMail for the prospects whose acceptance you cannot wait on, or who sit outside the reachable network entirely.
How to get more reach without more credits
Sales Navigator does not sell extra InMail credits. There is no top-up. So if 50 is the ceiling and you need more reach, the answer is not a bigger LinkedIn plan, it is a second channel.
That is how the teams I work with scale: LinkedIn (and its 50 InMails) handles the high-value, high-touch layer, and cold email handles the volume. The same prospect list gets worked on both surfaces. The email side has no monthly credit ceiling, just mailbox and sending discipline, which is covered in how many cold emails to send per day.
The multi-channel version also protects the account. Running LinkedIn at the ceiling every month is how accounts get restricted; the recovery playbook is in how to avoid LinkedIn account restrictions. Distributing the volume across channels keeps the LinkedIn account well inside the limits.
The mistakes that waste credits
In order of how often I see them:
- Spending credits on loosely matched prospects. The fastest way to burn 50 credits for zero replies.
- Writing a long pitch. InMail is a conversation opener, not a proposal.
- Forgetting the refund rule. Sellers who ask for a meeting in message one get ignored, so no refund, so no extra sends.
- Letting credits expire. A balance near 150 with unused credits is a waste of the plan.
- Using InMail where a connection request would work. Free reach spent as paid reach.
- Ignoring the reply rate. If the channel is not producing replies, the problem is targeting, and more credits will not fix it.
The bottom line
InMail credits are a small, expensive, refundable budget. Every Sales Navigator plan gives you 50 per month, unused credits roll over up to 150 within 90 days, and every reply returns the credit. That means the program that wins is the one built for replies: tight targeting, short messages, and a low-friction ask.
Do not try to scale on InMail alone. Fifty credits a month is a high-value channel, not a volume channel. Pair it with cold email for the volume, keep the account inside the LinkedIn limits, and treat each credit like the $2.40 it costs.
If you want the whole multi-channel system built and run for you, that is KomsGro’s outbound marketing service: the lists, the LinkedIn and email cadences, the infrastructure, and the measurement, run as one engine. But the rules above work on their own, and the only cost is the discipline of spending each credit on purpose.