Disclosure and methodology
Kiin is a B2B SaaS marketing agency — LinkedIn-led paid media and demand generation — and we are on this list. Every fact about another agency was read from that agency's own site on 14 September 2026; where a site does not state something, the entry says so.
Scored on: SaaS focus and the stage they say they serve · what the agency actually does (channels, not adjectives) · measurement — pipeline or leads · pricing and terms transparency · verifiable credentials. Not scored on: size, awards, design.
Pick by stage and by channel first
"B2B SaaS marketing agency" covers a fractional CMO for a $2M company and a 100-person performance agency for a $200M one. Two questions narrow the list faster than any ranking:
- What stage are you? Kalungi and The B2B Playbook say $1–10M ARR. Refine Labs says Series B and $50M+. Directive and Ironpaper are mid-market and enterprise. Kiin's clients are typically 50–200 people, $2M+ ARR, $5,000+ ACV.
- What do you need run? Everything (Kalungi, Bay Leaf), demand creation (Refine Labs, Kiin), paid media (Kiin, Powered by Search, TripleDart, Directive), or organic (SimpleTiger).
The agencies
1. Kalungi — best full-service outsourced marketing for $1–10M ARR SaaS
Stijn Hendrikse's agency replaces the marketing function for post-product-market-fit SaaS: a senior CMO-level lead with an execution team behind them, three engagement models by stage (full-service, "Syntropy" guidance with in-house execution for $1–5M ARR, and the T2D3 playbook for pre-PMF), and published client results (DataGuard +330% MQLs, Patch +1,500%). 83 NPS and 14,000+ T2D3 playbook purchases are the trust signals.
Tradeoff: you are hiring a whole function, which is the right answer when you have no marketing team and the wrong one when you have a good team missing one channel.
2. Refine Labs — best demand generation for Series B+ and $50M+ ARR
The agency that popularised "demand creation" for B2B SaaS, now explicitly aimed at Series B and beyond with $50M+ ARR. Runs paid media across every channel including CTV and out-of-home, with brand, messaging and creative in-house, and publishes portfolio averages (+41% high-intent demo requests, +33% pipeline value). Named clients include Clari, Cognism, Algolia, Showpad and BeyondTrust. The six-week Revenue Performance Assessment at $35,000 is the published entry point.
Tradeoff: the ICP is stated and it is not a $3M company. If you are below Series B, the frameworks are still worth reading; the engagement is not built for you.
3. Kiin — best for LinkedIn-led paid media and outbound at 50–200 people
Kiin is the B2B SaaS agency for companies whose buyers are on LinkedIn: managed LinkedIn Ads at $2,500 a month, full paid media (LinkedIn, Google, Meta, Reddit) at $5,500, and full demand generation with signal-based outbound and founder content at $9,500 — all flat, in USD, published. Three ex-LinkedIn Marketing Solutions staff on a team of eight. Runs its own LinkedIn Ads MCP server over 1,000+ connected accounts and publishes the largest independent thought leader ads study. Reports on landing page clicks and influenced pipeline. Named clients: Giga Energy, MarketerHire, Lead Forensics, Sova Assessment.
Where we are the wrong choice: if LinkedIn is not where your buyers are, if you need a full marketing function rather than paid media and outbound, or if media budget is under about $3,000 a month.
4. Directive — best for mid-market and enterprise performance marketing at scale
The largest agency on this list, with proprietary tooling (Stratos, DiscoverabilityOS), a global office footprint and a client roster that includes Calendly, Gong, ZoomInfo, BlackLine, Adobe and Cisco. Positions on "qualified pipeline over MQLs" and covers every performance channel. Publishes more SaaS marketing content than anyone in the category.
Tradeoff: enterprise process, enterprise minimums. Wrong shape for a Series A company.
5. Ironpaper — best for enterprise B2B with long, complex sales cycles
Twenty-plus years running demand generation and ABM for companies with long sales processes, with a stated preference for measurable business results over vanity metrics and HubSpot Diamond status for the operations side. Named clients include Steelcase, Solartis and Goddard Technologies. Ranks for "SaaS marketing agency" and "demand generation agency" on service pages rather than listicles, which is unusual and suggests domain authority earned over time.
Tradeoff: the client list skews enterprise and industrial-adjacent rather than venture-backed SaaS; check that they have run your kind of buyer.
6. Powered by Search — best for pipeline-guaranteed demand generation with SEO and paid together
A B2B SaaS demand-generation agency that puts a number on the outcome — 30% more sales-ready opportunities in 90 days, guaranteed — and runs paid, organic, ABM and HubSpot operations as one programme. Named clients include Elastic, Basecamp, Varonis and SentinelOne, with pipeline figures per case study ($11.1M SEO pipeline for a data privacy client).
Tradeoff: pricing and minimums are not stated, and a guarantee is only as good as the definition of "sales-ready opportunity" in the contract.
7. TripleDart — best for AI-native growth with organic, paid and GTM engineering under one roof
Positions as an "AI-native" SaaS agency with a proprietary agent platform (Slate), named functional heads for SEO, paid media and RevOps, and a client list that includes SentinelOne, Freshworks, HubSpot and Sprinklr. The GTM engineering and RevOps lines are what separate it from a pure paid or SEO shop.
Tradeoff: a US–India delivery model and a wide service catalogue; make sure the team on your account is the one in the pitch.
8. SimpleTiger — best SEO and AI-search-led growth for B2B SaaS
An organic-first agency that now leads with answer-engine optimisation alongside SEO, with paid as a secondary line. Publishes concrete case results — Invoca 41:1 ROI, Gainsight #1 in AI search across 459 competitors, Firecrawl 9× ROAS — and names 25+ SaaS clients including Segment, JotForm and Bitly.
Tradeoff: organic takes months and paid is not the core; if you need pipeline this quarter, pair it with a paid specialist.
9. Bay Leaf Digital — best for full-service SaaS marketing in Texas with HubSpot depth
Thirteen years of B2B SaaS-only work across the full marketing stack, with stated fits for seed-stage AI-native companies, scaling SaaS, turnarounds and vertical SaaS. Published results include a 16× increase in opportunities and 5× MQL growth for named case-study clients (IRS Solutions, TEXT2DRIVE, MeazureUp).
Tradeoff: generalist breadth: strong if you need everything from one team, less deep on any single paid channel than the specialists above.
10. The B2B Playbook — best for teams that want a framework and training with the agency
An education business with an agency attached: the 5 BEs framework, Playbook University courses, a weekly newsletter and a long-running podcast, plus a full-funnel demand-gen agency and a LinkedIn Ads service. Also publishes the "best agencies" lists that rank for most of the terms on this page, which tells you where the traffic comes from.
Tradeoff: if you want execution and no homework, the framework is overhead. Pricing is not published.
Side by side
| Agency | Base | Stage they state | Model | Core channels | Published pricing |
|---|---|---|---|---|---|
| Kalungi | Kirkland, WA | $1–10M+ ARR | Full-service / fractional CMO | All | By engagement; pay-for-performance option |
| Refine Labs | — | Series B+, $50M+ ARR | Demand gen + paid + brand | LinkedIn, Google, YouTube, Meta, CTV, OOH | RPA from $35k / 6 wks |
| Kiin | London | 50–200 people, $2M+ ARR | Paid media + outbound | LinkedIn-led; Google, Meta, Reddit | $2,500 / $5,500 / $9,500 per month |
| Directive | OC, Austin, NYC, London, Toronto | Mid-market, enterprise | Performance marketing | All paid + content + RevOps | No |
| Ironpaper | New York | Enterprise, long cycles | Demand gen + ABM | Content, ABM, paid, web | No |
| Powered by Search | — | B2B SaaS | Demand gen programme | Paid, SEO, ABM, HubSpot | No |
| TripleDart | Plano, TX + Bangalore | $10k–$500k/mo spend | Growth + GTM engineering | SEO, paid, RevOps | No |
| SimpleTiger | Sarasota, FL | Seed to enterprise | Organic-led | SEO, AEO, PPC | No |
| Bay Leaf Digital | Grapevine, TX | Seed to scaling | Full-service | All + HubSpot | No |
| The B2B Playbook | — | Not stated | Agency + courses | LinkedIn, Google, Meta, Reddit | No |
How to choose
- Match the stage they state to yours. Most agencies on this list say who they serve; believe them.
- Ask what "pipeline" means in their reporting. Influenced pipeline from a CRM, or MQLs with a new name?
- Ask who does the work. Full-service agencies staff with an owner and a team; make sure both are named.
- Ask for the fee in writing before the proposal. Nine of ten agencies here do not publish it.
- If LinkedIn is where your buyers are, ask the five LinkedIn questions on how to choose a LinkedIn Ads agency, starting with "do you report clicks or landing page clicks?"