Most people treat InMail credits like a budget line: spend them, wait for the month to reset, repeat. That framing is costing you real outreach capacity.
The smarter frame is a revolving fund. How fast it revolves depends entirely on how you spend.
What LinkedIn actually gives you per plan (and what the SERP gets wrong)
The allocation is straightforward, but a lot of articles get it wrong by mixing up plan generations.
Here is the current breakdown for the main paid tiers:
- LinkedIn Premium Career: 5 credits/month
- LinkedIn Premium Business: 15 credits/month
- Sales Navigator Core: 50 credits/month
- Recruiter Lite: 30 credits/month
Unused credits roll over for up to three months on most plans, then expire. The rollover ceiling varies, so check your account's InMail settings directly rather than relying on third-party summaries.
One thing the SERP consistently undersells: the plan tier is not the main variable. A Sales Navigator user who sends 50 poorly targeted InMails and gets a 5% reply rate ends up with an effective monthly allowance close to what a Premium Business user achieves with a 60% reply rate on 15 sends. The math is in the refund mechanic.
For a deeper look at how InMail fits into the broader LinkedIn outreach toolkit, see InMail LinkedIn: meaning, cost, and when to skip it.
The refund mechanic most users miss: how replied InMails come back to you
LinkedIn refunds one InMail credit automatically when the recipient replies within 90 days of your send. The reply can be a yes, a no, or an out-of-office. The content does not matter. What matters is that a reply was sent.
This creates a direct feedback loop between your inmail response rate and your effective monthly allowance.
If you send 20 InMails and 10 get replies, you recover 10 credits. Your net spend is 10 credits for 20 touchpoints. That is a fundamentally different economics than sending 20 InMails with zero replies.
The 90-day window is generous, but it also means you should not chase a reply after day 91. At that point, the credit is gone regardless of outcome.
One practical implication: a polite "not interested" reply is worth exactly as much as a "yes, let's talk" in credit terms. Do not be discouraged by negative replies. They are refunds.
Three ways to extend your monthly allowance without upgrading
1. Identify Open Profiles before you send.
Open Profile is a setting that LinkedIn Premium members can enable. It allows anyone to message them for free, with no InMail credit deducted. When you view a profile and see the "Message" button available without a credit indicator, that person has Open Profile enabled.
Systematically filtering for Open Profiles before your outreach run can eliminate credit spend entirely for a meaningful portion of your list. The proportion varies by industry and seniority, but in B2B SaaS and marketing, it is not negligible.
2. Prioritise recently active members.
A profile that has not posted or commented in six months is a low-probability send. LinkedIn activity correlates with notification checking, which correlates with InMail opens. Target members who have posted, commented, or reacted in the last 30 days.
This is not a guarantee of a reply. It is a filter that improves your odds, which improves your refund rate, which extends your allowance.
3. Shorten your messages.
There is a persistent belief that longer InMails signal more effort and therefore earn more replies. The opposite tends to be true. A message under 400 characters that opens with a specific, personalised observation gets more replies than a 1,200-character pitch.
More replies means more refunds. Brevity is a credit strategy, not just a courtesy.
This is exactly the kind of pattern that DSB Intelligence's Recommendations Engine flags early: when your InMail send volume is high but your refund rate is low, it surfaces the signal and suggests corrective action before you burn through another month's allocation.
How to read your InMail performance before spending another credit
Most users check InMail analytics after the month ends. That is the wrong sequence.
LinkedIn's native InMail reporting shows you reply rate, acceptance rate, and response breakdown by message. Before each new send cycle, pull that data and ask three questions:
- Which message templates generated the most replies last month?
- Which job titles or seniority levels replied most often?
- Which send days had the highest open-to-reply conversion?
The answers tell you where to concentrate your next batch of credits. If VP-level titles in SaaS replied at twice the rate of Director-level titles, that is where your next 10 credits go.
This is not sophisticated analytics. It is reading what LinkedIn already gives you. The problem is that most users skip this step and repeat the same send pattern month after month, wondering why their inmail credits renewal never feels like enough.
For guidance on crafting messages that actually get replies, see How to Send a LinkedIn InMail (and Why Most Fail).
When InMail is the wrong tool entirely
InMail is a paid workaround for the absence of a connection. Before spending a credit, run this checklist:
- Is this person already a 1st-degree connection? If yes, message them for free. InMail is not needed.
- Do they have an Open Profile? If yes, message them for free. No credit required.
- Do you have a mutual connection who could introduce you? A warm introduction converts at a higher rate than any cold InMail and costs nothing.
- Have you engaged with their content recently? A comment on their post followed by a connection request is a lower-friction path than a cold InMail.
InMail is the right tool when none of the above applies: the person is outside your network, has no Open Profile, and you have no warm path in. That is a narrower set of situations than most outreach strategies assume.
Spending credits on targets where a free alternative exists is the most common form of InMail waste. It is also the easiest to fix.
For broader context on LinkedIn outreach strategy, Create a LinkedIn Company Page: what actually matters covers how your company's presence affects inbound connection rates, which reduces your dependency on cold InMail over time.
Two other reads worth your time: Hashtags LinkedIn 2026 : est-ce que ça sert encore à quelque chose ? and Désactiver les vues de profil LinkedIn : un vrai arbitrage — both touch on visibility mechanics that affect how often prospects come to you first, before you need to reach out.
Et maintenant ?
- Audit your last 30 days of InMail sends. Pull the reply rate by message type and target seniority. Identify the one segment that outperformed and double down there next month.
- Filter your next outreach list for Open Profiles first. Remove them from your InMail queue and message them for free. Redirect those saved credits to harder-to-reach targets.
- Cut your message length by half. If your current InMails average 600+ characters, rewrite your top template to under 400. Send a split batch and compare reply rates after two weeks.
- Set a performance review before, not after, each send cycle. Fifteen minutes of data reading before you spend a single credit is worth more than any plan upgrade.
If you want a cleaner view of your InMail performance alongside the rest of your LinkedIn analytics, try DSB Intelligence free and see what your current send patterns are actually costing you.