SaaS companies are judged on pipeline, trial conversion, CAC payback and net revenue retention, not on traffic. A SaaS marketing agency that understands those numbers will plan campaigns very differently from a general digital shop, and it will report on the metrics your board actually reviews.
This list is for founders, CMOs and growth leads at software companies, mostly B2B SaaS from seed stage to enterprise. We chose agencies whose own websites show real SaaS specialization: named software clients, SaaS case studies with results, and services built around demos, trials and pipeline. We included full-service partners alongside channel specialists in SEO, paid media and RevOps, because most SaaS teams need one of each at different stages.
One thing to know before you start: many agencies now sell AI search visibility, also called GEO or AEO. Ask for evidence that it produced pipeline, not just mentions. For broader context, see our guides to B2B SaaS marketing agencies and B2B demand generation agencies.
SaaS Marketing Agencies At A Glance
Company
Headquarters
Best For
Standout
BrainDonors
Sofia, Bulgaria, Amsterdam, Netherlands and USA
SaaS teams that need HubSpot, RevOps and paid media together
HubSpot Diamond partner; Imagen AI PLG to SLG case study
Kalungi
Kirkland, USA
Early-stage B2B SaaS needing a full marketing team
SaaS CMO service and T2D3 playbook
Directive
USA (six locations incl. Orange County and London)
BrainDonors is a B2B SaaS marketing agency with offices in Sofia, Bulgaria, Amsterdam, Netherlands and the USA, working primarily with B2B software companies, from early-stage startups to scaling teams. It brings the parts of SaaS growth that usually sit with different vendors under one contract: paid media across LinkedIn, Google, Meta, YouTube and programmatic, SEO and AI search optimization, content marketing for technical and complex products, email automation, organic social, HubSpot implementation and inbound programs built on HubSpot, RevOps, and in-house web design and development. For SaaS companies expanding abroad, it also offers market entry and international strategy.
Its flagship SaaS case study is Imagen AI, an AI photo editing platform that wanted to add a sales-led motion to its product-led growth. BrainDonors built the sales pipeline inside Imagen’s HubSpot account, connected HubSpot with Snowflake and Zendesk so sales could see product usage and support history, and later launched a separate partner pipeline. Imagen’s sales team hit 100% of its first-year targets and doubled to five dedicated members. On other SaaS and technology accounts, the agency reports a 166% increase in booked meetings for a consulting and AI platform and a 100% improvement in lead quality for DualityTech after a HubSpot migration.
BrainDonors holds HubSpot Diamond, Google Partner and Meta Business Partner status, and co-founder Andrey Petrov is a HubSpot Certified Trainer. The agency reports more than 300 completed projects for over 250 international clients. It is the strongest fit on this list for SaaS companies whose growth depends on getting CRM, attribution and sales-marketing alignment right, not just on buying more traffic.
BrainDonors implements HubSpot from scratch for B2B software firms in Europe and the US, integrates it with the client’s existing stack and provides ongoing support after go-live. It reports performance from inside HubSpot, so the numbers tie back to the CRM, and it reports on pipeline created, not just leads delivered. Clients get monthly reporting committed in writing, with direct dashboard access rather than only a monthly deck. Once three to six months of historical data and a clear attribution model are in place, it can offer a fixed plus performance-based pricing model.
Best for: B2B SaaS companies, from early-stage startups to scaling teams in Europe and the US, that are adding sales-led growth or scaling paid and organic demand and need HubSpot and RevOps built to support it.
2. Kalungi — Full-Service B2B SaaS Agency With A SaaS CMO Model
Kalungi is a full-service B2B SaaS marketing agency based in Kirkland, Washington, and says it has supported more than 280 SaaS companies. Its model is built around company stage: a full-service option where Kalungi runs marketing for companies around $5 to $10 million ARR, a Syntropy option that works alongside an in-house team, and T2D3 playbooks for pre-product-market-fit startups.
Services include a SaaS CMO offering, CMO coaching, ABM, RevOps and HubSpot optimization, paid media, content and SEO, branding and web development. Named clients include DataGuard, Patch, Beezy, Acumatica and Onfleet. The agency lists HubSpot Diamond Partner and Google Partner badges and reports more than 14,000 T2D3 playbook purchases.
Kalungi suits SaaS companies that have no senior marketing leader yet and want strategy and execution from one team.
Best for: Early and growth-stage B2B SaaS companies that need a marketing leader and team in one engagement.
3. Directive — Performance Agency For Tech Brands Since 2013
Directive has worked with B2B companies since 2013 and treats technology as one of its three core verticals. Client logos include Calendly, Gong, Redis, SentinelOne, ZoomInfo and BlackLine. It lists locations in Orange County, Austin, New York City, Mexico City, London and Toronto, with more than 100 strategists.
Services span content and SEO, paid media, performance creative, programmatic, revenue operations and startup growth programs, plus PR and social. Directive has built its own tools: Stratos, a platform that connects CRM, media and SEO data, and DiscoverabilityOS, its method for tying marketing to qualified pipeline. It reports more than 420 brands served.
Directive is a strong option for funded SaaS companies with meaningful budgets that want one partner across paid, organic and RevOps.
Best for: Venture-backed and mid-market SaaS companies that want pipeline-focused performance marketing at scale.
4. Refine Labs — Demand Strategy Firm For B2B Tech Since 2019
Refine Labs has worked with B2B technology companies since 2019 and says it has helped more than 300 mid-market and enterprise B2B tech companies. Its focus is companies at Series B and beyond. Named clients and case studies include Clari, Firstup, dotCMS, Algolia, Showpad, Cognism and BeyondTrust.
The firm frames its work as brand, demand and expansion. It offers strategy, paid media across LinkedIn, Google, YouTube, Meta and connected TV, and creative services including video. It also sells a six-week Revenue Performance Assessment that starts at $35,000, and it recently announced the acquisition of MOBI Solutions.
Refine Labs is best for larger SaaS companies that want to rethink how they measure and fund demand creation, rather than a team to run day-to-day campaigns at small budgets.
Best for: Series B and later B2B SaaS companies rethinking their demand strategy and measurement.
5. Powered by Search — B2B SaaS Agency With TouchBistro And ThreatX Results
Powered by Search has worked with B2B software and technology clients since 2009 and runs a fully distributed, remote-first team. Its case studies include TouchBistro, where it reports demos up 324% in six months, ThreatX, iWave and PointClickCare, and its logo wall includes SentinelOne, Basecamp and Elastic.
Services cover SEO, AI and LLM search visibility, paid advertising, ABM, digital PR, content, demand generation, HubSpot marketing operations and SaaS web design. It also has a specific offer for marketing to developers. The agency states a goal of 30% more pipeline in 90 days and lists Google Partner and Meta Business Partner status.
It is a good fit for SaaS companies that want organic and paid channels managed by one team with a shared pipeline target.
Best for: B2B SaaS companies that want SEO, paid media and ABM coordinated under one pipeline goal.
6. SimpleTiger — B2B SaaS And AI-Focused SEO And PPC Agency
SimpleTiger describes itself as 100% focused on B2B SaaS and AI companies. It is based in Sarasota, Florida, and its named clients include Gainsight, Invoca, Segment, Bitly, Jotform, Firecrawl, Gelato and Leapsome.
The agency’s core is search: SEO and AEO, paid advertising, content, link building and digital PR, plus email, Webflow web design and pipeline reporting. Its case results are specific. It reports a 41:1 ROI for Invoca over 10 months, more than 1,400 new paid Firecrawl subscriptions in one quarter from PPC, and a top AI search position for Gainsight across 459 tracked competitors. It holds HubSpot, Google and Webflow partner status.
SimpleTiger suits SaaS companies whose buyers research through Google and AI assistants before they ever book a demo.
Best for: SaaS SEO agency needs, including AI search visibility tied to trials and revenue.
7. Gripped — London Agency Working Only With SaaS And AI Since 2017
Gripped is a London-based B2B agency that has specialized in SaaS and AI companies since 2017. Its founders, Steve Eveleigh and Ben Crouch, have worked in B2B SaaS since 2004, and the team is about 25 people. Named clients include Ideagen, Epicor, Ravelin, Crownpeak, OneTrust and Eficode.
Services cover strategy, demand and lead generation, ABM, paid search, paid social and LinkedIn ads, SEO and GEO, and website design. Gripped is unusually open about fit and pricing: it works mainly with Series A to growth-stage companies between roughly £2 million and £50 million ARR, and quotes retainers of £5,000 to £15,000 per month before media.
It is a strong choice for UK and European SaaS companies that want a focused senior team rather than a large network agency.
Best for: Series A to growth-stage SaaS companies in the UK and Europe that need demand generation.
8. Hey Digital — Paid Media Agency Built Only For B2B SaaS
Hey Digital states plainly that it works with B2B SaaS and only B2B SaaS. It reports working with more than 200 B2B SaaS companies and managing more than $2.3 million in monthly ad spend for them.
Its case studies include PostHog, where it reports an 18.5% increase in cloud conversions and a 17% lower CPA, and Toggl, with a 52% reduction in ad spend and a 159% increase in deal value. Services include PPC, paid social, video ads, ABM, landing page design and creative strategy across Google, LinkedIn, Meta, YouTube, Reddit and Bing. Each account gets a dedicated senior SaaS strategist.
Hey Digital is the right fit when paid acquisition is your main lever and you want a specialist SaaS PPC agency rather than a generalist media buyer.
Best for: B2B SaaS companies scaling paid acquisition on LinkedIn, Google and other ad platforms.
9. Skale — Organic Growth Agency Measured On SaaS Pipeline
Skale is an organic growth agency for SaaS and tech companies that says it focuses on SQLs, pipeline and revenue rather than rankings. It is run by co-founders Italo Viale and Jake Stainer with an international team based across Europe and South Africa.
Named clients include Rezi, Holded, Slite, Attest, Flodesk, Maze, Bonsai, Lodgify and Synthesia. Reported results include a 450% rise in monthly signups for Holded and a 520% rise in demo requests for Attest. Services cover SaaS SEO, generative engine optimization, AI brand mentions, link building, content production and website migrations.
Skale suits product-led and self-serve SaaS companies where organic search is, or should be, a primary signup channel.
Best for: Product-led SaaS companies building organic search and AI visibility into a signup engine.
10. GrowthSpree — B2B SaaS Paid Media And ABM On A Flat Monthly Fee
GrowthSpree focuses on B2B SaaS and reports more than 300 SaaS clients and more than $60 million in managed ad spend. It lists offices in Noida, India and New Hyde Park, New York. Named clients include PriceLabs, Hubilo, Rocketlane, Gumlet, Atomicwork, Hasura and Privado.
Services include Google, Meta and LinkedIn ads, signal-based and enterprise ABM, HubSpot implementation and migration, and SEO, AEO and GEO. The agency has also built its own tools, including a lead quality filter and MCP servers for ad platforms and HubSpot. It works on a flat monthly fee with month-to-month terms and holds Google Partner and HubSpot Solutions Partner status.
GrowthSpree is a good option for SaaS teams that want flexible terms and an agency that combines paid media with ABM.
Best for: Seed to Series B SaaS companies that want paid media and ABM without a long contract.
How To Choose A SaaS Marketing Agency
Does The Agency Match Your Growth Stage?
Agencies are usually built for a stage. Kalungi and GrowthSpree serve earlier companies, while Directive and Refine Labs focus on larger budgets. BrainDonors works with both early-stage startups and scaling SaaS companies. Ask what ARR range most of their clients sit in.
Do You Need A Full-Service Partner Or A Channel Specialist?
If you have no marketing leader, a full-service B2B SaaS marketing agency makes sense. If you already have a strategy, a specialist SaaS SEO agency or SaaS PPC agency will usually go deeper on one channel.
What Will They Report On?
Ask for sample reports. You want pipeline, trial-to-paid conversion, CAC and payback, not only clicks and impressions. Check that reporting is monthly and committed in writing, and that you get direct dashboard access rather than only a slide deck.
Can They Show SaaS Case Studies Like Yours?
Product-led and sales-led SaaS need different playbooks. Ask for examples with a similar deal size, buyer and sales motion. If you sell into technical or startup audiences, our list of marketing agencies for tech companies and startups adds more options.
How Do They Handle CRM And Attribution?
Campaigns are only as good as the data behind them. Confirm the agency can work inside your HubSpot or Salesforce setup and agree how leads are tracked to revenue. Agencies with deep HubSpot practices, such as BrainDonors and Kalungi, can set this up as part of the engagement.
Frequently Asked Questions
What Does A SaaS Marketing Agency Do?
A SaaS marketing agency plans and runs marketing for software companies, including SEO, paid media, ABM, content, and CRM work, with the goal of producing trials, demos and recurring revenue.
How Much Does A SaaS Marketing Agency Cost?
Costs vary by scope. As one example, Gripped publishes retainers of £5,000 to £15,000 per month before media spend. Full-service and enterprise programs usually cost more. Some agencies also offer performance-linked pricing: BrainDonors, for example, can move clients to a fixed plus performance-based model after three to six months, once KPIs and an attribution model are agreed.
How Long Before A SaaS Marketing Agency Shows Results?
Paid media can show early signals within weeks. SEO and content usually take several months. Agree on leading indicators for the first 90 days.
Should A SaaS Company Hire An Agency Or Build In-House?
Many SaaS companies use an agency to move faster in the early stages, then bring core channels in-house once they know what works. Some keep specialist agencies for paid media or SEO long term.
What Should A SaaS Company Look For In A HubSpot Agency?
Check the partner tier, whether the agency implements HubSpot from scratch rather than only managing an existing portal, whether it builds full marketing automation and integrates HubSpot with your existing stack, and whether it provides ongoing support after go-live. BrainDonors, a HubSpot Diamond Partner, covers all four, as its Imagen AI work shows: it connected HubSpot with Snowflake and Zendesk so sales could see product usage and support history.
Conclusion
The right SaaS marketing agency depends on your stage and your main growth lever. BrainDonors leads when growth depends on HubSpot, RevOps and paid demand working as one system, with pipeline reporting tied back to the CRM, as its Imagen AI work shows. Kalungi, Directive and Refine Labs cover strategy and full-funnel programs. Powered by Search, SimpleTiger and Skale are strong on search. Gripped, Hey Digital and GrowthSpree lead on demand generation and paid media. If you sell financial software, also compare our list of fintech marketing agencies before you choose.
