What is a LinkedIn sponsored message?
A sponsored message is an ad that lands in a member's LinkedIn inbox instead of their feed, usually sent in the name of a person who agreed to be the sender. LinkedIn's Sponsored Messaging page lists two formats, message ads and conversation ads, shown on desktop and mobile when members are active on LinkedIn and charged per send. Here is how they differ, from LinkedIn's help centre spec pages for message ads and conversation ads, checked 4 November 2026:
| Message ad | Conversation ad | |
|---|---|---|
| Buttons | One call-to-action of up to 20 characters, plus a required Not Interested button | Up to five buttons per message and 50 per conversation, 25 characters each; Not Interested takes one of the five on the intro message |
| Text | Up to 1,500 characters, 10 emojis and three links | Up to 8,000 characters per message, 10 emojis per message layer |
| Subject line | Up to 60 characters | Optional, up to 60; without one, the first message shows in the inbox preview |
| Objectives | Website visits, lead generation, website conversions | Brand awareness, website visits, lead generation, website conversions, engagement |
| Banner | Optional, 300 x 250 pixels at most, desktop only | Optional, 300 x 250 pixels at most, desktop only |
A sponsored post runs in the feed instead. Members can boost their own posts from the Activity tab where LinkedIn has released the feature, Page admins can boost Page posts from a computer, and Sponsored Content posters can sponsor Page posts in Campaign Manager, per LinkedIn's boosting FAQ and Page boosting page. Our guide on how to promote a LinkedIn post has the steps.
How much do LinkedIn message ads cost?
You pay for each message delivered, at a price set by auction, and LinkedIn's help pages give no typical cost per send (checked 4 November 2026). Its pricing help page says the price depends on how sought-after your audience is, your bidding strategy, your objective and a relevance score based on factors such as click-through rate, comments, likes and shares. Its budget guide sets a $10 minimum daily budget for any ad format and $100 minimum lifetime budget for a new campaign.
The cost figures we found come from practitioners, so treat them as reports, not prices:
- B2Linked, an agency that runs only LinkedIn ads, wrote in a February 2022 benchmarks post that it sees about a 55% open rate, a 3.2% average click-through rate (counting any click inside an opened message) and $0.50 to $1 per send, which it says usually works out at $25 to $60 per click. It called sponsored messaging LinkedIn's most expensive ad format.
- In a June 2025 r/LinkedinAds thread asking for conversation ad benchmarks, one advertiser said they usually pay 0.25 to 0.45 per send (no currency given), depending on audience competition.
- LinkedIn's own Message Ads page says more than 1 in 2 prospects open a message ad, without saying how that was measured.
Opens are cheap; leads are what you budget for. Here is the arithmetic for 1,000 sends. The costs per send are the ends of B2Linked's 2022 range; the open, click and form rates are invented, so replace them with your own data.
Real numbers can land at either end. One advertiser in an August 2025 thread, messaging C-level executives at US nonprofits, reported $103.60 to $280.38 a lead across three campaigns and $889.70 spent with no leads in a fourth.
Who actually receives a LinkedIn message ad?
Fewer people than your audience size suggests. These rules from LinkedIn's help pages, checked 4 November 2026, all shrink delivery:
| Rule | What LinkedIn says | What to do |
|---|---|---|
| Activity | Ads are shown when members are active on LinkedIn | Expect sends to trickle in, not arrive at once |
| Europe | EEA and Swiss members get these ads only if they opted in, through a consent prompt introduced in the EU in August 2024 and since extended; they can switch any time (EEA page) | Plan for a smaller European audience than the forecast |
| Language | Targeting English reaches only members whose profile language is English, unlike Sponsored Content | Run a separate ad set per language |
| Frequency | LinkedIn strictly controls how often a member can receive Sponsored Messaging; the help pages give no number | See the caps B2Linked reports below |
| Inbox life | A newer sponsored message moves yours to the Archived folder; sponsored messages are deleted six months after delivery | Make the subject line do the work |
| Not Interested | Members can delete or archive the ad, and LinkedIn then shows them that ad set less | Target tightly rather than broadly |
| Contact lists | A list must match at least 300 member accounts; LinkedIn recommends uploading 10,000 or more emails (list requirements) | Use InMail for a few dozen named people |
| Sender | A 1st-degree connection of the person sending the request, who must accept it; using a company name as sender means contacting LinkedIn support (sender rules) | Line up the sender before you write the copy |
On frequency, AJ Wilcox, host of B2Linked's LinkedIn Ads Show, said in a June 2026 episode that LinkedIn support told them there is a dynamic cap of 7 to 18 days per member, depending on how active they are, plus a 30-day cap per sender and per ad. That is second-hand, but if it is right, one ad from one sender reaches each member at most once in 30 days. If a sender withdraws permission, LinkedIn cancels their ads and says this can't be reversed.
Message ads or conversation ads: which should you run?
LinkedIn's comparison page recommends testing both. The practitioners disagree on which wins, and the reason matters for your budget:
- For message ads: in an April 2026 article, B2Linked says that after about a year of running conversation ads, it saw them open at around 35% against 50% to 55% for message ads with everything else the same, and message ads came in at about 40% lower cost per lead. It says LinkedIn's teams couldn't pinpoint why, and it recommends message ads until that is fixed.
- For conversation ads: in a May 2025 thread, three replies preferred conversation ads, citing a more prominent inbox spot, retargeting of people who engage, and multiple buttons; one reply ran message ads because they are simpler to set up. B2Linked also says conversation ads can be retargeted and message ads can't.
Our reading of those facts, as a decision table for a small team:
| Use | When | Deciding fact |
|---|---|---|
| Message ad | One clear offer, such as an event seat or a report, with a Lead Gen Form | B2Linked's 2026 open-rate gap; one button keeps it simple |
| Conversation ad | Two or three offers for different readers, or a qualifying question first | Up to five buttons and a click flowchart in Campaign Manager |
| InMail from Premium or Sales Navigator | Fewer than 300 named people | Contact lists need 300 matched members before an ad set can run |
| Connection request, then a message | People you want an ongoing relationship with | No ad spend; the conversation stays in your own inbox |
Our guide to InMail credits, costs and refunds covers the third row. For the fourth, see InMail vs connection request. If you'd rather reach a few hundred buyers who just showed a reason to talk, Siela's Lead Finder looks for signals such as hiring for the work you automate or comparing tools, and sends from your own account within the daily goals you set.
What do advertisers report about sponsored messaging?
We read nine r/LinkedinAds threads about sponsored messaging, from March 2025 to August 2026. These are individual advertisers' reports, not benchmarks:
- Opens near half. One reply in the May 2025 comparison thread put open rates between 45% and 55%, and click or response rates anywhere from 0.2% to 5% depending on audience and offer.
- Opens don't mean demos. An advertiser in a December 2025 thread saw about 50% opens over six to seven weeks with no demo bookings. One reply blamed the offer and said the worst-performing sender function is Sales, with better results from customer success or senior executive senders.
- Warm audiences first. In three threads, including that one, a November 2025 thread on whether they are worth it and a March 2025 thread on message length, at least one reply said to use sponsored messages for retargeting or the bottom of the funnel rather than on cold audiences. One reply in the November thread did report success with cold conversation ads.
- Thin budgets stall. In an August 2026 thread about conversation ads at $10 a day aimed at 35 to 40 companies, three replies said that was too little; one said it could work for a tight audience but needed enough volume.
One reply in the length thread suggests a check worth copying: send yourself a test and open it on your phone; if you have to scroll to see the button, it's too long.
What should a LinkedIn message ad say?
Lead with who is writing and why, keep it short, and make an offer that is useful even to people who won't buy this year. The reason is what LinkedIn's B2B Institute calls the 95-5 rule: 95% of potential buyers aren't ready to buy today. Its advice is to fund lead generation for the 5% but spend far more on brand advertising for the rest. A demo request speaks only to the 5%; a seat at a useful session can also start a relationship with later buyers. A sample for an invented company:
LinkedIn's best-practice page also names Tuesday and Wednesday as the best days to launch, without giving data, so treat that as a starting point to test.
Frequently asked questions
What is the 95-5 rule on LinkedIn?
It is a rule from LinkedIn's B2B Institute, which it says its joint research with the Ehrenberg-Bass Institute supports: at any time, about 95% of potential buyers aren't ready to buy and only 5% are. Its advice is to fund lead generation for the 5% but to invest far more heavily in brand advertising that reaches future buyers.
How much does LinkedIn Sponsored Content cost?
The price is set by auction, and your objective and bidding decide whether you pay per impression or per click. For scale, the agency B2Linked wrote in February 2022 that it typically saw $8 to $11 a click on Sponsored Content, against $25 to $60 a click for sponsored messages once their per-send cost was converted. Check your own Campaign Manager forecast.
Why isn't my LinkedIn message ad delivering?
Check the usual limits first. Sponsored messages only go to members while they are active, a contact list needs at least 300 matched members, an English ad set reaches only profiles set to English, and people in the EEA and Switzerland must have opted in. LinkedIn also strictly limits how often a member receives these ads, and the agency B2Linked reports a 30-day cap per sender and per ad, which slows a campaign with one ad from one sender.
Are LinkedIn message ads the same as InMail?
No. InMail is a Premium feature: you write each message yourself and it uses a credit, with 15 new credits a month on Premium Business and 50 on Sales Navigator Core. A message ad is advertising bought in Campaign Manager, charged per send to a targeted audience, and usually shown as coming from a person who agreed to be the sender.
Can you send LinkedIn message ads to people in Europe?
Yes, with a smaller reach. LinkedIn supports targeting the European Economic Area and Switzerland, but only members there who chose to see sponsored messages in their inbox receive them. Members choose between those and a banner ad above the inbox, and can change the choice at any time in their data privacy settings.
Sources
- LinkedIn Marketing Solutions Help: Sponsored Messaging ads (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Message ads advertising specifications (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Conversation ads advertising specifications (checked 4 Nov 2026)
- LinkedIn Marketing Solutions: Message Ads specifications (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Create message ads in Campaign Manager (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Best practices for creating successful message ads (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: LinkedIn's advertising cost and pricing (checked 4 Nov 2026)
- LinkedIn Marketing Solutions: Campaign budgets for your LinkedIn Ads (checked 4 Nov 2026)
- LinkedIn Marketing Solutions: Message Ads (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Sponsored Messaging in the EEA and Switzerland (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Requirements for contact targeting lists (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Sender permission requests for Sponsored Messaging (checked 4 Nov 2026)
- LinkedIn Marketing Solutions Help: Difference between message ads and conversation ads (checked 4 Nov 2026)
- LinkedIn B2B Institute: The 95-5 Rule (checked 4 Nov 2026)
- B2Linked: LinkedIn Ad Benchmarks (28 Feb 2022; checked 4 Nov 2026)
- B2Linked: Stop Using LinkedIn Conversation Ads (Here's What to Use Instead) (22 Apr 2026; checked 4 Nov 2026)
- B2Linked, The LinkedIn Ads Show: Stop Using LinkedIn Conversation Ads Now (5 Jun 2026; checked 4 Nov 2026)
- LinkedIn Help: Boost your own LinkedIn post FAQ (checked 4 Nov 2026)
- LinkedIn Help: InMail message credits (checked 4 Nov 2026)
- LinkedIn Help: Boost a post from your company's LinkedIn Page (checked 4 Nov 2026)
- r/LinkedinAds: Messages ads vs Conversations ads (19 May 2025; checked 4 Nov 2026)
- r/LinkedinAds: Conversation Ads only: average cost per send, open rates, and response rates (12 Jun 2025; checked 4 Nov 2026)
- r/LinkedinAds: Sponsored Message Ads Not Converting (11 Dec 2025; checked 4 Nov 2026)
- r/LinkedinAds: Is LinkedIn InMail Ads worth it? (4 Nov 2025; checked 4 Nov 2026)
- r/LinkedinAds: Is $103-$280 CPL normal for LinkedIn InMail targeting C-levels? (4 Aug 2025; checked 4 Nov 2026)
- r/LinkedinAds: Message Ads (length) (12 Mar 2025; checked 4 Nov 2026)
- r/LinkedinAds: Conversation Ads at $10/day for a select group of companies (17 Aug 2026; checked 4 Nov 2026)
- B2Linked: LinkedIn Ads Agency homepage (checked 4 Nov 2026)