Booost vs Salesflow: the clearest volume curve in the category, against a flat price per account.

The short answer

Salesflow is a cloud outreach platform — "First cloud platform in the market", on its home page — for LinkedIn and email, built around teams: a unified inbox across LinkedIn and Sales Navigator, HubSpot and Zapier, API access and UI customisation on every plan, and a price per seat that drops with every tier of team size. From $99 per seat, down to $24.99 at a hundred seats.

Booost Business is a desktop application. Your LinkedIn session stays on a machine you own, it does outreach and content in one workflow, scores the network you already have, and puts no quota on what you may send. €99 per managed account per month, €79 on Basic — the same price whether you run one account or twenty.

The honest split, in one line: if you are a team or an agency buying twenty seats or more, Salesflow's curve makes it much cheaper than Booost, and it has the inbox and the API your team will ask for. If you are buying for one to four accounts and want the tool on your own hardware, with content and network intelligence, that is Booost. Our limit — and our price shape — are stated first.

The limit on our side, first

Two of them. Booost Business runs while the machine it is installed on is running; Salesflow's cloud runs whether or not your computer is on. And Booost has no volume pricing: the twentieth account costs what the first one does. Salesflow's entire pricing page is the opposite promise — "The bigger your team, the less you pay per seat." Both belong at the top.

What Booost does that Salesflow does not

Your session never leaves your machine. Booost signs into LinkedIn the way you do — a browser on your computer, your own connection. We never receive your password, and there is no copy of your session on a server we control. For Salesflow's core promise to work, Salesflow must be able to reach LinkedIn as you while you are away; that is not a criticism, it is the mechanism the feature requires.

We are deliberate about the wording: "the session stays local" and "the data stays local" are two different promises, and only the first one is ours — your connection graph does travel to our servers, because that is where the network intelligence below is computed.

It maps the network you already have. Booost scores every contact on six axes — thematic fit, seniority, activity, target fit, influence and proximity — each with the evidence behind it, and shows your network as a graph connected by company, school and shared themes. The Strategy tab tracks an affinity score (0–100) for people you want in your network, rising with real interactions and cooling with silence, and can suggest a warm path through a mutual connection and draft the note. Salesflow works from searches and lists and adapts the sequence to each prospect's behaviour — "One Sequence, Multiple Outcomes". It does not score the network you already have, and nothing in this comparison does.

It publishes. Booost drafts posts from your own sources — feeds you choose, merged across several outlets — runs each draft through quality gates (a fact-check against the web, a faithfulness check against the source), queues it for your approval, and publishes it under your name or as a Company Page, then reacts, comments and reposts around it in the same workflow as the outreach. Salesflow's feature list covers outreach — InMails, endorsements, post likes, profile views, email — and does not include publishing posts. We state that as not listed.

Your limits are set by safety, not by your plan. Salesflow's plans differ by seat count and by team features, not by daily quotas, which is to its credit. Booost has no plan quota on any edition: the only ceilings are the anti-ban ones, identical on Basic and Pro, and there to keep the account alive.

The AI is included flat, or bring your own — including a local model. On Booost Pro, model access is part of the subscription; on Basic, and optionally on Pro, you bring your own key across 20 providers, or run a local model with Ollama so nothing leaves the machine. Salesflow's pricing page does not list AI writing among its plan features; we state that as not listed, not as absent.

Built in the EU, GDPR by default, and the desktop app is audited WCAG 2.2 AA.

And Booost Personal is a different product entirely — a browser extension with its own dashboard, for people who want to be present on LinkedIn rather than run campaigns. It reads a post, drafts a comment in your voice in any language, and you publish it. It automates nothing, which is the one compliance claim nobody else in this category can make; it has its own section below. €19–29 per account per month.

"The cloud runs 24/7" — so does Booost, on hardware you own

Booost Business runs while the machine it is installed on is running — and that machine does not have to be your laptop. Every release ships a Linux .deb and an AppImage next to the Windows and macOS builds, and the licence says you may install it on "any device of your own". A small Debian server for a few euros a month qualifies: install it there, leave it on, and campaigns run around the clock.

So both can run 24/7. The difference is whose machine acts as you — theirs or yours — and only one of the two requires a third party to hold something that can log in as you.

One honest gap, documentation rather than architecture: we do not yet publish a step-by-step guide for a headless server, where a desktop application needs a virtual display. It works; the guide is not written yet.

Where Salesflow is stronger

1. Price at volume. $39.95 per seat at twenty seats, $29.98 at fifty, $24.99 at a hundred — and a further 15% or 30% off for six- or twelve-month terms. Booost is €79–99 per account at any volume. For an agency this column decides the comparison, and we are not going to bury it.
2. A unified inbox across every account, on every plan. "Manage conversations from LinkedIn and Sales Navigator in a single inbox", with reminders, snooze, scheduled sending and templates. Booost's inbox is per account; a team answering for many accounts will feel that every day.
3. Team features on every plan. API access, UI customisation with your brand, HubSpot and Zapier on all plans; a white-label URL and a dedicated customer success manager from twenty seats. Booost has no API, no white-label and no native CRM integration today — a genuine gap on our side, not a difference of philosophy.
4. Email in the same sequence. Booost is one network by choice; that is still less surface.
5. More LinkedIn actions. InMails and skill endorsements are on Salesflow's list and not on ours.
6. Nothing to install, and maturity. A cloud product with "10,000+ users", against one that opens on 1 September 2026.

Prices, as each company lists them

Read the right-hand column first, and then the minimum seat counts: Salesflow's best prices require a team of that size.

Salesflow takes 15% off for six months and 30% for twelve. Currencies are left as each company publishes them: converting them produces a table that goes wrong on its own when the rate moves.

At one seat, the two are close: $99 against €79–99. At twenty-five, they are not: Salesflow Pro is $39.95 a seat, Booost is €79–99 an account, and the gap is the whole decision for an agency. Booost's founding price gives the Pro edition at the Basic price — €79 per account — locked for as long as the subscription stays active; it does not change the shape of the curve.

The claim nobody in this category can make — except one

Section 8.2 of LinkedIn's User Agreement prohibits third-party software that automates activity on LinkedIn regardless of where it runs, naming bots, browser plug-ins and browser extensions. Cloud platforms are covered; so are desktop applications; so is Booost Business, and our Acceptable Use Policy says exactly that in writing rather than in small print.

Nobody here — us included — can honestly claim LinkedIn's approval, and nobody has published data comparing restriction rates between architectures. Argue about the mechanism, which is checkable; be sceptical of anyone quoting a percentage.

The exception is Booost Personal, and it is the only clean compliance claim in the category: it performs no action on LinkedIn at all. It drafts, a human publishes. No cloud tool can say that, and no other browser extension can either, because both of them act.

How to choose

If you are a team or an agency of twenty seats or more, Salesflow's price, unified inbox and API make it the better buy, and this page has told you so in its first paragraph.

If you are buying for a handful of accounts and want them on hardware you own, with a map of the network you already have and content that starts from your sources — that is the product Booost is.

Booost opens on 1 September 2026. Join the waitlist to keep the founding price.

Sources

Checked 22 August 2026.

• Salesflow pricing — the seat tiers, minimums, term discounts and the feature table
• Salesflow home — "First cloud platform in the market", "The more you grow, the less you pay per seat", "10,000+ users"
• LinkedIn User Agreement — section 8.2
• LinkedIn: prohibited software and extensions
• Booost prices and what each edition includes: our own terms and pricing