LinkedIn outreach playbook for B2B: profile, requests, messages and limits

What LinkedIn prohibits

Read this first, because the rest of the playbook depends on it. All LinkedIn facts in this article were checked on 18 October 2026. The playbook assumes a person does the clicking and recommends nothing that automates activity on LinkedIn.

LinkedIn's help page on prohibited software says it does not permit third-party software, including crawlers, bots, browser plug-ins and browser extensions, that scrape, modify the appearance of or automate activity on its site. The page names the User Agreement as the rule being broken, says members who use such tools "risk having their accounts restricted or shut down", and adds that the tools themselves may stop working without notice (LinkedIn Help: Prohibited software and extensions). The page makes no exception for tools that describe themselves as safe.

The User Agreement (effective 3 November 2025) says in section 8.2 that members will not "Use bots or other unauthorized automated methods to access the Services, add or download contacts, send or redirect messages, create, comment on, like, share, or re-share posts, or otherwise drive inauthentic engagement" (LinkedIn User Agreement). LinkedIn's page on invitation restrictions adds that repeated suspensions for automated activity may result in permanent restriction of an account (LinkedIn Help: Types of restrictions for sending invitations).

The last row comes from the Professional Community Policies: "Do not use our invitation feature to send promotional messages to people you don't know or to otherwise spam people." The same policy bars "gratuitously repetitive messages" (LinkedIn Professional Community Policies).

Profile and targeting

Your profile is the landing page for every request and message. Before you send anything, check four things.

• Your real name and a current photo. The User Agreement requires a real name, and LinkedIn says a profile photo helps recipients recognize you and adds credibility (LinkedIn Help).
• A headline that says who you help and with what, in plain words.
• An about section of three or four lines on the problem you solve, with one proof point you can back up.
• No sales page. Anyone who accepts your request will open your profile before they answer.

For targeting, build the LinkedIn list from the same ICP list you use for email, so one account is never worked from two directions. The ICP playbook covers how to score fit. Sales Navigator is the usual tool for the search itself. LinkedIn's plan comparison, checked 18 October 2026, shows the differences that matter for outreach.

The source is LinkedIn's account types and features page. LinkedIn's help pages list no prices. LinkedIn's feature overview also lists a Relationship Explorer for finding warm paths into an account and multi-threading to several buyers, and a Relationship Map for spotting gaps in a buying committee. Both help when you want two or three contacts per account instead of one.

Keep the weekly target list small enough to research. We plan 30 to 80 new people per sender profile per week (a working default that matches the limits below), each with a reason for being on the list. Our list building work for a UK B2B SaaS company produced 50K+ verified leads using Sales Navigator, Crunchbase and enrichment tools (case study), and the weekly LinkedIn batch is cut from a list of that kind. Signals tell you which names go first, as the signal-based outbound playbook explains.

Connection requests

LinkedIn's own guidance is to invite people you know and trust, and to add a personal note that explains how you know them or why you want to connect. Its policy is blunt about strangers: no promotional messages in invitations. So keep pitches, links and calendar asks out of the request.

A note is also rationed. LinkedIn says free members can add a personalized message to five connection requests a month, while Premium members can send unlimited personalized messages with their requests (LinkedIn Help: Invitation limit reached). Whether a note even helps is unclear. Belkins' 2026 study of 2025 LinkedIn outreach, which analyzed 11.5 million connection requests, reports a 25.3 percent connection rate for requests with a personalized note and 27.6 percent without (Belkins). One caveat applies to every Belkins figure in this article: the study's larger dataset comes from Expandi, a LinkedIn automation platform, so at least part of the data describes automated accounts. We cite it for direction only.

Our default is to send the request with no note unless there is a real, specific reason: such as a shared event or something they wrote. In that case write one sentence and nothing else. An example (illustration): "Hi [First name], I read your post on [topic] and would like to follow your work."

Two LinkedIn rules shape how many requests you can afford to send. If many invitations are ignored, left pending or marked as spam, the account can be restricted. After you withdraw an invitation, you cannot resend one to the same person for up to three weeks (LinkedIn Help). Both argue for fewer, better-chosen requests.

Message sequence after they accept

Once someone accepts, send at most two messages and then move the person to another channel. The policy bar on "gratuitously repetitive messages" is one reason; the other is that a third nudge in the same inbox rarely adds anything the second did not.

Keep each message to 40 to 80 words with one ask (a working default). Reference a fact the reader can check, in the same way as the email first lines in our cold email copy playbook.

InMail for people who have not accepted

LinkedIn's help page on InMail credits says every Sales Navigator plan (Core, Advanced and Advanced Plus) gets 50 credits a month, granted on the first day of the month in UTC. You can hold up to 150, unused credits roll forward but must be used within 90 days, and you cannot buy more. A credit comes back for each InMail that gets a response within 90 days, including auto replies such as "Interested" or "Maybe later". LinkedIn sends the recipient an automatic reminder within three days, and a second InMail to the same person before they respond uses another credit. Credits do not transfer if you cancel or change plan (LinkedIn Help: Understand InMail credits in Sales Navigator). LinkedIn also suggests InMail and Groups as ways to reach members you do not know (invitation restrictions page). With 50 credits a month, we reserve InMail for top-tier accounts where the request has sat unanswered.

Weekly limits: what LinkedIn documents and what we use

LinkedIn does not publish a number. The pages we read say that all members, Basic and Premium, are subject to invitation limits and restrictions, and that you cannot buy or acquire more invitations.

These come from two LinkedIn help pages, Types of restrictions for sending invitations and Invitation limit reached.

Because the ceiling is unpublished, we run conservative defaults of our own. They are not LinkedIn figures.

If acceptance falls well below the 25 to 28 percent range in the Belkins data, look at the list and the profile before raising volume.

How LinkedIn and email work together

Treat the two channels as one sequence on one list. Both channels draw from the same contacts, share one suppression list, and stop together the moment someone replies on either. Email carries the volume and the offer. LinkedIn adds a second, visible touch and a face for people who never answer email. Day-by-day timing, with phone steps added, is in the multi-channel outbound sequence playbook.

Resist comparing channel reply rates from different studies. Belkins reports a 7.2 percent overall reply rate across its LinkedIn data, defined as replies divided by messages sent. Woodpecker reports a 1.5 percent median reply rate across 56,614 email campaigns in the last 90 days of 2025 (Woodpecker, page updated 5 August 2026). The denominators, populations and definitions differ, so the gap tells you little about which channel to prefer. The only comparison that settles it is a test on your own list, with some contacts on email alone and the rest on both channels. Our cold email vs LinkedIn outreach comparison sets out when each one fits.

The same rules we apply to the email side, covered in the cold email playbook, apply here: a verified first line and a small offer, with no pitch before trust. If you want that built and run as one system, it falls under our cold email and outbound systems service.

Questions

Can I use a LinkedIn automation tool safely?

LinkedIn's help page says it does not permit third-party software, including bots and browser extensions, that automates activity on its site, and the User Agreement bars bots that add contacts or send messages. Members who use such tools risk having their accounts restricted or shut down, so we recommend doing the sending by hand.

How many connection requests can I send per week?

LinkedIn does not publish a number on the pages we read. It restricts accounts that send many invitations quickly or whose invitations are ignored or marked as spam. We start at 30 a week and cap at 80, which are our own defaults.

Should I add a note to a connection request?

Only with a specific reason, and never a pitch. Free accounts get five personalized notes a month, and Belkins' 2025 data (partly from an automation platform) shows 25.3 percent acceptance with a note against 27.6 percent without.

How many messages should I send after someone connects?

Two, four to six days apart, then stop on LinkedIn and continue by email if the sequence calls for it. LinkedIn's policies bar gratuitously repetitive messages.