Best outsourced marketing department services: ten providers and who each fits

01. Mark1Lab

Mark1Lab builds the marketing function for founder-led B2B companies that do not have one. It fits when there is revenue and a product that works, and no system underneath either that a permanent hire could run. Roughly 15 to 80 people, with the hire being discussed for this year or next.

Three phases, each with a price. Diagnose runs six to eight weeks at $15,000 fixed and produces a costed build plan you keep either way. Build runs three months minimum at $15,000 to $25,000 a month, and is where the function gets installed. Transition runs four to eight weeks at half the build rate, moving systems, decisions, logins and role specs to whoever takes it on.

The exit date is agreed in week one and written into the contract. An engineer leads the build and nobody junior touches the account. The three numbers are published, and the operating logic behind the sequence is set out in how to build a marketing function from scratch.

What separates this from a fractional executive is what you hold at the end. A fractional CMO supplies direction and leaves you coordinating the suppliers who turn it into anything. A build leaves a working function and the documentation to run it.

The limit is deliberate and it rules out a lot of buyers on this page. Ongoing campaign management is outside the scope, as is weekly content production, brand identity work, and tuning a marketing function that already performs. Anyone who needs a permanent external department should pick a provider built to be one, and nine of those follow.

02. Right Side Up: a senior talent bench

Right Side Up is a talent collective rather than an agency. It places senior marketers into fractional roles, assembles flexible teams, supplies executive strategy, and supports permanent hiring, drawing from a bench rather than a fixed staff roster.

It fits a company that can name the gap and wants the right person in it quickly. The model flexes, so hours and people move up or down as the quarter changes. Lifecycle help now, podcast buying or agency oversight later, without a recruitment cycle in between.

The limit is ownership. A bench fills gaps fast and it does not decide what the company should build first. Someone still has to hold the function, the order of work and the commercial scorecard, and if that person is the founder then the founder's calendar is the constraint the money did not fix.

Right Side Up works best where the brief exists and the capacity does not. Where the brief is the thing missing, a bench multiplies the number of people waiting for one.

03. MarketerHire: marketplace access to vetted specialists

MarketerHire matches companies to vetted freelance and fractional marketers, founded in 2018 and still independent, with matches typically inside 48 hours. It is the fastest route to one specialist: an SEO lead, a paid media operator, a lifecycle marketer, an email specialist.

The marketplace trades breadth for speed. You state the work, the budget, the seniority and the hours, and get a short list rather than an open freelance pool to sift. Month-to-month terms and a paid trial keep the first commitment small.

That works when the brief is already written. Strategy settled, CRM clean, paid search leaking budget: a matched specialist takes the channel without the salary or the wait. Nothing about the model produces the brief itself.

So a marketplace is a different object from a built department. Positioning, channel choice, reporting and coordination stay in-house, and a marketplace cannot invent a market position and an operating model while it is also running your ads. Use it once you know what you are buying. The comparison between fractional leadership, agency capacity and a function build covers where each one breaks.

04. Chief Outsiders: executive-led growth for mid-market

Chief Outsiders is the largest fractional executive firm in the United States, running since 2009 with a bench of over 125 CMOs and CSOs, most of them former Fortune 500 or mid-market executives. The work runs on its Growth Gears methodology, with a Team Outsiders model supplying execution support alongside the executive.

The stated fit is mid-market and private-equity-backed portfolios, generally from around $25m in revenue. That number matters more than any other line in this entry, because it sits well above where most founder-led companies reading this page will be.

Where it earns its money is a company with a real growth problem, enough internal capacity to act on direction, and a board that has started asking marketing questions. An executive gives sales, finance and leadership one person to argue with and one shared target, which beats four channel freelancers with no common owner.

The trade-off is installation. Executive leadership can stop short of building the systems. Where the CRM, the content process, the reporting and the first demand channel all need putting in, ask who does that work once the strategy lands, and get the answer in writing before the engagement starts. Pricing is quoted per engagement.

05. CMOx: fractional CMO leadership for smaller companies

CMOx places fractional CMOs using its Functional Marketing framework, built on the EOS operating model. Worth understanding the shape of the business first: CMOx is a dual-sided network that trains fractional CMOs as well as placing them, so the bench is partly a cohort it has taught.

The client-side fit is smaller companies than the description usually suggests. Founder Casey Stanton's published work centres on seven and eight-figure businesses and SMBs across digital and physical markets, and the Clutch profile shows a $5,000 minimum project size at hourly rates between $200 and $300. Anyone reading CMOx as a mid-market or private-equity option has it confused with the firm above.

It fits when the missing piece is judgement. Channel staff, an agency or two and a working CRM already exist, and no senior person is setting the order of work. A fractional CMO pulls those into one plan and gives leadership a straight view of marketing performance.

It fits badly in a founder-led company with no function at all. Direction is not installation, and somebody still has to ship the first demand motion. Ask for a named execution plan, with names in it, before signing.

06. GrowTal: flexible access to fractional talent

GrowTal connects companies to pre-vetted marketing experts covering fractional CMOs, content strategists and channel specialists. The process opens with a discovery call, produces two to four candidates, and supports hourly, part-time or full-time arrangements so capacity can move with the business.

That makes it a reasonable spine for a hybrid department. Product knowledge, customer insight and final decisions stay inside the company. Outside talent covers SEO, paid search, lifecycle work or an interim leadership gap.

The risk is coordination, and it is the same risk that sinks most flexible-talent arrangements. A pool becomes a set of disconnected contractors the moment nobody owns the strategy and the source of truth. Agree one scorecard before anyone starts, then have every specialist report against the same pipeline number.

Outsourcing saves money when one person owns the plan, the data and the handoffs. Where that person does not exist, adding four specialists adds four sets of handoffs and no owner for any of them.

07. The Growth Syndicate: an embedded team that plans to leave

The Growth Syndicate is the closest thing on this list to Mark1Lab's model, and the entry is longer for that reason. Founded in March 2024 by three operators out of Amsterdam companies that exited, Recruitee, 3D Hubs and Impraise, it embeds a fractional team across positioning, demand generation, ABM, content, SEO and revenue operations for B2B tech, and reports work with over 30 companies.

It makes two claims Mark1Lab also makes. No juniors, with every engagement led by a senior head of growth. And an intent to exit: the firm states that it aims to make itself obsolete within three to nine months by building in-house capability. Anyone comparing the two should know that before a call rather than after one.

The pricing model is the most transparent structure here. Hourly rates against a monthly minimum, billed pay-as-you-go, cancellable on 30 days' notice with no lock-in. Against a twelve-month agency contract that is a better deal for any company that might need to stop.

Where the two models separate is what the exit is made of. An aim to become obsolete is a stated intention priced by the hour, and an hourly engagement with rolling notice has no defined end. A phased build has a date in the contract from week one and a fixed price against each phase, so the total is known before the first invoice. Which of those a company wants depends on whether it needs the option to keep going or the certainty of stopping.

It is more firepower than a company needs when the internal team works and only technical SEO or paid search execution is missing.

08. Heinz Marketing: sales and marketing alignment

Heinz Marketing works on the seam between sales and marketing, which is where a specific and common failure lives. Leads passed badly. Lifecycle stages that mean four things to four teams. Marketing reporting activity that sales cannot act on.

The work leans consulting rather than daily channel execution. That earns its keep in the argument where sales says lead quality is poor and marketing says volume is fine, because both are usually describing the same broken definition from opposite ends. A shared definition of a qualified lead gives the two teams one language.

Test the fit by walking the handoff from first touch to sales acceptance. Check whether the CRM records ownership, stage movement, source and revenue impact, and whether anyone has looked at those fields in the last quarter. Those details decide more than a traffic graph ever will.

The limit is coverage. Content, SEO, paid media, PR and social work stay unstaffed. Fixing the commercial rules between two teams is worth doing and it does not produce a department.

09. New North: outcome-scoped work for B2B technology

New North works with small and mid-market B2B technology companies, scoping engagements against the business outcome rather than a fixed block of hours. It suits a company with product-market fit and a modest marketing function already running.

Outcome-based scoping keeps the conversation on the result. A company might need a site that converts, stronger demand capture, or a clearer position in a technical market where every competitor sounds the same. The engagement gets shaped around that instead of a service menu.

This is the sensible pick when some marketing already works. There is a team, a known buyer and a basic commercial motion, and the partner improves the system rather than rebuilding it. It can also cost less than a full outsourcing arrangement, since you are not paying for work your own people already do.

Rates are not published and each engagement gets scoped on its own. Ask what is included, who owns execution day to day, and what happens on the last day. An outcome-based fee still needs a defined output and an exit path, and neither is automatic.

10. Single Grain: growth strategy with channel execution

Single Grain pairs senior growth strategy with hands-on channel execution, on project or retainer terms, working across paid acquisition, SEO, content and conversion work. It fits a growth-stage company that knows its market and wants strategy connected to live campaigns.

The hybrid shape is the useful part. Product knowledge and customer voice stay in-house while the external team takes the channel work that needs specialist depth. A marketing leader gets more reach than one fractional specialist could supply.

Ask for the dashboard early. It should show how spend connects to qualified leads, opportunities and revenue, and it should exist before the engagement rather than get built during it.

The limit is focus. Single Grain is a generalist growth partner rather than a B2B specialist, and its client base runs well beyond B2B. Where the product needs deep technical fluency, or where the function has to be built from nothing, compare the team structure before you compare the retainer.

11. The ten side by side

What is missing decides this, and the four missing things are different jobs. Leadership. Channel capacity. Sales alignment. A department that did not exist before. Cost savings follow scope too, since outsourcing removes unused full-time capacity and poor coordination puts the cost straight back.

On pricing, the category is thin. Mark1Lab publishes all three phase prices. The Growth Syndicate publishes the structure, hourly against a monthly minimum with 30 days' notice, without publishing the rate. CMOx and MarketerHire carry minimums on their review-platform profiles. The other six quote per engagement after a call. Published numbers are not a proxy for quality, and they do tell you how much of your evaluation time gets spent on the phone.

Before the first login is handed over, settle access. The contract should cover data access, account ownership, approval rights, confidentiality, and what happens to files, logins and systems on the last day. Outsourced work that runs on a supplier's own accounts and tooling can leave a company unable to reach its own history when the relationship ends.

Then run the whole decision through one question. What has to exist after the engagement finishes? A senior leader is a fractional CMO. One working channel is a specialist or a marketplace. Extra hands are a bench. A department a hire can inherit is a build.

12. How to choose the right model

Most of the money lost in this category gets lost before the contract is signed, in the gap between the problem a company has and the product it went shopping for. Six checks close most of that gap.

Six checks, before any proposal gets compared to any other proposal.

• Ownership. Who holds the plan, the data and the handoffs when specialists disagree?
• Scope. Is this leadership, capacity, alignment, or a function that has to be created?
• Execution. After the strategy lands, whose hands install the CRM and ship the first campaign?
• Measurement. Qualified leads, sales-accepted opportunities, pipeline and acquisition cost, with baselines set before work starts.
• Commitment. Minimum term, notice period, and what a stop costs you in month two.
• Exit. What is documented, and who holds the logins the morning after.

Treat traffic and impressions as diagnostic signals. They explain why a number moved and they are the wrong thing to be graded on, and any provider leading a monthly report with them is choosing the metric it can guarantee.

Where the audience, the proposition, the channel plan, the systems and the owners are all still open, that is not a staffing shortage. It is a function nobody has built. The four real options at that point are worth reading before briefing anyone.

13. How this list was put together

Providers were selected for named, checkable positioning in outsourced marketing, then written up from their own sites, LinkedIn profiles and verified review-platform entries, accessed in August 2026. Methodology names, bench sizes and client claims are the providers' own. Pricing appears only where a provider or a review platform publishes it, so several entries say the number comes on a call rather than guessing at one. Ownership and stage fit were checked, which is why the Chief Outsiders and CMOx entries here read differently from the versions on most comparison pages.

Mark1Lab sits at the top of a list Mark1Lab wrote, with the same limit line as everyone else and the published prices. The Growth Syndicate entry runs longer than the others because the overlap is real and burying it would be the wrong call. One documented build shows the shape of answer worth asking any provider here for, with more in selected builds.