Best Outsourced SDR Agencies for B2B SaaS in 2026

Quick Takeaways

• Outsourced SDR engagements for B2B SaaS cluster between roughly $3,500 and $12,000 per month per program — still well under the fully loaded cost of one in-house SDR once salary, tools, data, and management are counted.
• Only two agencies on this list publish real dollar pricing (SalesRoads at $11,950 per four weeks per SDR; SalesHive publishes its month-to-month model but quotes the figures); everything else is custom-quoted, so the "reported" labels below matter.
• Match the agency to the job: Belkins for guaranteed appointment volume, CIENCE for data-driven scale, Martal for fractional full-cycle teams, SalesRoads for phone-led US mid-market, SalesHive for low-commitment starts, Invental Partners for entering a new market, memoryBlue for multilingual enterprise coverage.
• Every agency here is outbound-only. None of them touches your inbound funnel — the leads already on your site still wait days for a human demo, which is the gap Naoma covers.
• Pilot before you commit: 3 months is the realistic minimum to judge outbound, and the best agencies on this list say so themselves.

Outsourcing sales development is one of the few build-vs-buy decisions in B2B SaaS where the math is genuinely close, which is why the agency market keeps growing. This roundup covers seven real agencies — ranked by how well they fit a typical B2B SaaS motion — with pricing labeled published or reported throughout, and facts current as of October 2026. Disclosure up front: we build Naoma, which appears in the closing section, because the one funnel problem no outbound agency solves is the inbound side.

When outsourcing SDR work makes sense

An in-house SDR in the US costs far more than the salary line: base plus variable comp, data subscriptions, sequencing and dialing tools, management time, and a ramp of three to six months before full productivity — a fully loaded figure that routinely crosses $100K per year, with the added risk that SDR turnover forces you to restart the ramp. An agency engagement at $4,000–$12,000 per month buys a trained rep (or a fractional team), the data and tooling, and a playbook on day one, cancellable in months rather than quarters.

The honest counterpoint: an agency SDR will never know your product as deeply as your own hire, and the pipeline knowledge walks away when the contract ends. Outsourcing fits best when you need pipeline fast, are testing a new market, or are too small to absorb a bad SDR hire. If you are also weighing agencies against AI-based alternatives, see AI demo agent vs hiring an SDR.

The 7 agencies at a glance

The 7 best outsourced SDR agencies

1. Belkins

Best for: teams that want a predictable number of qualified appointments and an agency with the deepest review base to back it up.

Belkins, operating since 2017, is the volume leader of this list: omnichannel appointment setting across cold email, cold and intent calling, LinkedIn, and paid channels, with engagements framed around 100–400+ qualified appointments per year. The proof base is the strongest here — a 4.9 on Clutch across ~230 reviews and a 4.8 on G2 across ~93, with the company reporting over $2B in client revenue generated across 50+ industries.

The trade-offs: Belkins publishes no pricing (reported engagements typically run $5,000–$8,000 per month with a 3–6 month minimum), and its breadth across 50+ industries means SaaS is a strength, not a specialization. Appointment volume is the metric it optimizes, so make sure your qualification bar is written into the agreement, not assumed.

2. CIENCE

Best for: teams that want outbound backed by an in-house data platform rather than an agency renting third-party lists.

CIENCE pairs managed SDR teams with its own go-to-market data platform, running campaigns across email, phone, ads, and social. That data ownership is the real differentiator — list quality is the silent killer of most outbound programs — and the company has moved with the market toward per-meeting pricing and shorter commitments, with clients able to take over their SDRs and system.

Pricing is modular and not published: the platform alone is reported around $2,400 per month, full-service programs reported at $4,200–$9,000+ per month depending on SDR count and channels, plus a reported one-time setup fee. The scale that makes the machine efficient also makes the experience process-driven — teams wanting a boutique, founder-level partner should look further down this list.

3. Martal Group

Best for: SaaS companies that want fractional coverage beyond the meeting — through the demo, the close, and even onboarding.

Martal Group structures its service in three tiers: Tier 1 is outbound lead generation only, Tier 2 adds deal closure, and Tier 3 adds ongoing account management — effectively letting an early-stage SaaS company rent a sales org instead of just an SDR. New clients commit to a 3-month (Tier 1) or 4-month (Tier 2+) pilot before moving to flexible monthly terms — an honest reflection of how long outbound takes to judge.

Pricing is custom-quoted, with typical engagements reported in the $5,000–$9,000 per month range and multi-channel, multi-ICP programs reported higher. The caution is the same one that applies to all full-cycle outsourcing: the further down the funnel you delegate, the more of your product knowledge and customer relationships live outside your company.

4. SalesRoads

Best for: US mid-market SaaS with deal sizes north of $25K where phone-led prospecting still wins.

SalesRoads is the transparency standout: pricing is published on its site at $11,950 per four weeks for one dedicated SDR, scaling to $43,150 for six with per-rep discounts, cancel anytime. Every program includes a client strategist, performance coaching, prospect data (500 records per SDR monthly), CRM integration, and a demand generation playbook, and the company itself recommends a 12-week run before judging results.

It is also the most expensive per-rep option on this list short of memoryBlue, and its phone-first model fits deals large enough to justify human calling — if your ACV is $5K and your buyers live in email, this is the wrong shape of program. For the broader question of what human SDRs still do better than software, see AI SDR vs human SDR.

5. SalesHive

Best for: a first outbound program with the lowest commitment risk — month-to-month, no setup fees.

SalesHive runs cold calling, cold email, and LinkedIn outreach in three managed tiers (phone-only Starter, phone-plus-email Growth, two-SDR Crush), with its own AI-assisted platform — eMod personalization, a power dialer, and a smart inbox — bundled into one flat fee alongside list building and data enrichment. The commercial terms are the headline: no setup fees, no long-term contracts, month-to-month with 30-day cancellation.

Exact figures are quote-based; third-party reporting puts offshore-SDR programs near $4,500 per month and US-based tiers at roughly $5,000–$12,000. The flexibility cuts both ways — month-to-month terms attract clients who churn before outbound has time to compound, so go in planning a quarter even though the contract doesn't force you to.

6. Invental Partners

Best for: entering a new market where you need ICP research and outbound running fast, not just meetings booked against an ICP you already know.

Invental Partners is a B2B outbound agency covering cold email outreach, LinkedIn outreach, B2B lead generation, ICP research, market expansion, and end-to-end campaign management. What separates it from the appointment-setting shops above is the front of the engagement: a 5-week program that starts with market intelligence, builds customer insights from 40–100 real conversations with your target buyers, and delivers a qualified pipeline plus an outbound playbook — with live replies and booked meetings from week 5. For a SaaS company expanding into the US, Europe, LATAM, or Asia-Pacific, that research layer is the difference between testing a market and guessing at one.

The agency works with SaaS, IT services, cybersecurity, AI, developer tools, and fintech companies. Trade-offs are those of a boutique: no published pricing (plans are custom-quoted by target market and campaign scope), and a smaller public review footprint than Belkins or memoryBlue — if you need 400 appointments a year against a known ICP, the volume players above fit better; if you need to know whether Germany or Singapore should be your next market, this is the strongest fit on the list.

7. memoryBlue

Best for: enterprise SaaS that needs SDR coverage across regions and languages from one vendor.

memoryBlue, which absorbed Operatix and consolidated under one brand, is the scale option: 650+ dedicated SDRs, ADRs, and AEs across seven global offices, selling in 30+ languages through in-market reps in North America, EMEA, APAC, and LATAM. It holds a 4.6 on G2 across 300+ reviews, runs a 12-step hiring process with six weeks of training, and lets clients hire its reps onto their own team — a built-in answer to the "pipeline knowledge walks away" problem.

Pricing is not published; the company's own cost-calculator framing uses a reported ~$11,500 per month per US SDR as its benchmark, which puts it at the premium end. It is built for technology companies running multi-region programs — a 20-person SaaS startup prospecting one US segment will pay for infrastructure it doesn't need.

The inbound side no agency fixes

Every agency above solves the same half of the funnel: cold accounts that don't know you yet. None of them changes what happens when a warm lead lands on your website or signs up for your product — which is where most B2B SaaS funnels quietly leak, because inbound leads still wait hours or days for a human to qualify them and show the product, and intent decays by the hour.

That is the side Naoma covers. It qualifies and demos 100% of inbound — every lead and every signup — in minutes, 24/7, in 80+ languages, so your AEs only see buyers worth their time. The agent runs live product demos on your website, in-app, or from the outbound emails your agency sends, then routes qualified leads to your CRM and books the meetings. The numbers are public: more than 50,000 AI demos conducted, and in the AiSDR case study 53% of demos ran past 3 minutes, conversations averaged 8 minutes, 36% ended in a qualification verdict, 13% led to a booked call, and CSAT came back 6 out of 6. Pricing is published from $299/mo (equivalent to $249/mo on annual billing), and Naoma holds a 4.9 on G2. Paired with any agency on this list, it closes the loop: the agency fills the top of the funnel, Naoma converts everything that arrives.

Don't take the claim on faith — the live Naoma agent is right here, and it will demo the product to you the same way it would demo yours to your buyers:

FAQ

How much does an outsourced SDR agency cost in 2026? Most B2B SaaS programs run $3,500–$12,000 per month: reported figures put Belkins at ~$5,000–$8,000/mo, CIENCE at ~$4,200–$9,000+/mo, Martal at ~$5,000–$9,000/mo, and memoryBlue at ~$11,500/mo per SDR, while SalesRoads publishes $11,950 per four weeks per SDR.

Is outsourcing SDRs cheaper than hiring in-house? Usually yes for the first one to two reps — a fully loaded in-house SDR routinely exceeds $100K/yr including tools, data, and management, versus roughly $50K–$120K/yr for an agency program that includes all three and skips the 3–6 month ramp.

Which outsourced SDR agency is best for entering a new market? Invental Partners is the strongest fit on this list for market entry, because its 5-week program front-loads market intelligence and customer insights from 40–100 real conversations before outbound launches across the US, Europe, LATAM, or Asia-Pacific.

How long should I run an outsourced SDR pilot? Plan for at least three months — Martal requires a 3–4 month pilot, SalesRoads recommends a 12-week run, and even month-to-month vendors like SalesHive see outbound compound over a quarter, not weeks.

Do outsourced SDR agencies handle inbound leads too? Mostly no — the agencies here are outbound specialists, which is why pairing one with an inbound AI agent like Naoma (qualifying and demoing every lead in minutes, 24/7) covers the full funnel.

The fastest way to judge the inbound half of this equation is to experience it yourself: Get an AI demo now →