Best B2B Cold Calling Services and Agencies for 2026

TL;DR

• B2B cold calling services vary widely: some run outbound SDR teams, others layer digital channels on top of phone outreach. Choosing the wrong model wastes budget.

• SalesRoads ranks #1 for US teams that want experienced phone-first SDRs with 5 to 10 years of sales experience.

• Hey Sid (#2) is not a cold calling agency. It is the digital infrastructure that warms prospects before your team calls, using person-level ads, LinkedIn outreach, and thought leadership coordinated against the same named individuals.

• This guide compares 6 b2b cold calling services and agencies: pricing, strengths, limitations, and a decision framework for every sales situation.

• Use the decision framework at the bottom to match the right service to your pipeline stage.

Please note that pricing may change, so always check the latest details on the product's website.

Pricing may change. Always check the latest details on the vendor's website.

What Makes a Good B2B Cold Calling Service in 2026

The market for outsourced B2B cold calling services splits into four categories. Knowing which you need shapes every buying decision.

Category 1: Phone-led SDR agencies. These services provide trained outbound reps who call, qualify, and book meetings on your behalf. SalesRoads and Martal Group lead this category. They are best for companies with a clear ICP that need volume.

Category 2: Multi-channel outbound agencies. These agencies add email, LinkedIn, and sometimes intent data alongside phone calls. Belkins and Callbox operate here. Phone is one channel among several. The result is more coverage and a higher chance of reaching decision-makers across touchpoints.

Category 3: SDR-as-a-service platforms. CIENCE sits here. A managed human SDR team is wrapped in a technology layer, including AI-driven sequencing and proprietary data. Better performance visibility than a pure agency model.

Category 4: Digital-first outreach infrastructure. Hey Sid operates in this category. It is not a cold calling replacement. It runs person-level advertising, LinkedIn outreach, and thought leadership against the same named decision-makers over 60 to 90 days, so that when your team or agency picks up the phone, the prospect already knows who you are.

The best-performing outbound teams in 2026 combine Category 1 or 2 with Category 4. Warm prospects answer calls. Cold ones do not.

#1 SalesRoads: Best for Experienced US B2B Cold Calling

Specialty: Phone-led B2B appointment setting and SDR outsourcing

Pricing: ~$9,950/mo (from third-party review data; verify at Salesroads)

Best for: North American B2B companies that need senior, experienced SDR talent

Pricing may change. Always check the latest details on the vendor's website.

SalesRoads focuses on conversation quality, not call volume. The company invests three times the industry standard in SDR training, and its reps carry an average of 5 to 10 years of experience. That means fewer calls, but better conversations with real decision-makers.

Strengths:

• U.S.-based SDRs with deep domain experience across B2B verticals

• Training-led approach: reps are coached on your specific market, not just a script

• G2 rating of 4.9 stars, with consistent praise for meeting quality

Limitations:

• Pricing starts at ~$9,950/mo, which prices out early-stage companies

• Phone-first model: email and LinkedIn outreach not stated as core services

• US-focused: less suited for European or Nordic market coverage

Best for: B2B companies targeting North American accounts with deal sizes that justify a $10K/mo investment in premium SDR talent.

#2 Hey Sid: Best for Warming Prospects Before B2B Outreach

Specialty: Person-level advertising, LinkedIn outreach, and done-for-you thought leadership

Pricing: Custom. Request pricing at Hey Sid, Book a demo

Best for: B2B companies targeting 20 to 200 named accounts where familiarity before outreach is the deciding factor

Hey Sid is not a cold calling agency. That distinction matters.

Most b2b cold calling services send a rep into a conversation cold. Hey Sid runs the 60 to 90 days before that call, so the prospect knows your name, your company, and your value proposition before anyone picks up the phone.

The operating model is called The Influence Loop: three components, coordinated against the same named decision-makers.

Always On runs person-level advertising on LinkedIn and Meta targeting specific individuals by name and role, not job titles or company IP addresses. Decision-makers at your target accounts see your ads for weeks before outreach starts.

Authority Builder creates done-for-you thought leadership content published under your name. The same people seeing your ads are reading your perspective. They form an opinion before the first message arrives.

Precision Connect automates LinkedIn outreach to the same individuals. By the time a connection request or message lands, the prospect has already seen your ads and read your content. The outreach feels like a natural next step, not a cold interruption.

The results are specific. Devotion Ventures booked 45+ qualified meetings in 4 months (client-reported). Risk Ident cut its sales cycle by 2.5x while increasing engagement by 40% (client-reported). Mercuri International reduced ad spend by 85% while closing one of their biggest deals in a decade (client-reported).

Hey Sid is designed so that cold calling becomes less necessary, not more. If your team or agency makes outbound calls, those calls land better when prospects already recognise the name on the caller ID.

Strengths:

• Person-level targeting: ads reach named individuals, not just job titles or company IP ranges

• All three channels coordinated against the same decision-makers over 60 to 90 days

• Designed for European and Nordic markets with GDPR compliance in mind; also used across US markets

• Managed service: no internal team or tech stack required to run it

Limitations:

• Not a replacement for cold calling: Hey Sid does not make outbound calls on your behalf

• Not self-serve: requires a managed engagement, not a software subscription

• Does not run cold email campaigns

Best for: B2B marketing teams that want to generate pipeline from named accounts and make any outbound calling programme significantly more effective.

Explore Hey Sid: Hey Sid, How it works

#3 Belkins: Best for B2B Appointment Setting at Scale

Specialty: B2B appointment setting, email outreach, and SDR outsourcing

Pricing: Custom, not publicly disclosed. Contact at Belkins.io

Best for: Mid-market teams that need a consistent, managed flow of sales-qualified meetings

Pricing may change. Always check the latest details on the vendor's website.

Belkins is a well-established appointment setting agency with a broad client base across technology, professional services, and SaaS. Their core service combines outbound email sequences with SDR reps who handle qualification and meeting booking.

Strengths:

• Strong track record across a wide range of B2B industries

• Email outreach is a core competency, with dedicated copywriting and sequencing

• Transparent reporting on meetings booked and pipeline generated

Limitations:

• Person-level ad targeting not stated in public service descriptions

• Pricing is custom and not disclosed upfront, which makes budget planning harder

• Most publicly available case studies focus on English-speaking markets

Best for: Mid-market B2B companies in English-speaking markets that want predictable, managed appointment setting without building an in-house SDR team.

#4 Martal Group: Best for North American SaaS and Tech Lead Generation

Specialty: On-demand B2B sales outsourcing and SDR services for tech companies

Pricing: From $4,100/mo (from third-party data; verify at Martal Group)

Best for: SaaS and technology companies targeting North American accounts

Pricing may change. Always check the latest details on the vendor's website.

Martal Group specialises in B2B lead generation for technology and SaaS businesses. Their outsourced SDR teams focus on North American markets and work from defined target account lists rather than broad campaign blasts.

Strengths:

• Dedicated SDRs who focus on tech and SaaS verticals

• Named-account targeting: SDRs work from defined target account lists

• More accessible entry pricing than SalesRoads

Limitations:

• Primarily North American focus: limited track record in European or Nordic markets

• SDR-only model: person-level advertising and thought leadership not stated as core offerings

• Lower pricing reflects less SDR seniority compared to premium agencies like SalesRoads

Best for: Early-stage to growth-stage SaaS companies in North America that want dedicated SDR support without a $10K/mo price tag.

#5 Callbox: Best for Multi-Region B2B Pipeline Coverage

Specialty: Multi-channel B2B lead generation including phone, email, social, and chat

Pricing: $15,000-$30,000/mo per campaign pod

Best for: Companies that need pipeline across multiple geographies or verticals simultaneously

Pricing may change. Always check the latest details on the vendor's website.

Callbox runs multi-channel outbound campaigns that combine phone, email, LinkedIn, and live chat. Their Pipeline platform provides reporting and CRM integration across all channels.

Strengths:

• True multi-channel approach: phone is one channel, not the only one

• Geographic coverage: active across North America, APAC, and Europe

• Proprietary CRM and pipeline management tools included

Limitations:

• Multi-channel breadth can mean less depth in any single channel versus a specialist agency

• Person-level advertising (display and LinkedIn Ads) not stated as a core service

• Reporting depth varies by contract tier

Best for: B2B companies that need pipeline generation across multiple regions or that sell to accounts spread across multiple geographies.

#6 CIENCE: Best for Tech-Enabled SDR Outsourcing

Specialty: Managed outbound SDR services with an AI-driven platform

Pricing: From ~$2,400/mo (est.; third-party estimate via Arvani Media; verify at cience.com/pricing)

Best for: Funded startups to mid-market companies that want a tech-enabled outbound stack with human SDRs

Pricing may change. Always check the latest details on the vendor's website.

CIENCE has evolved from a pure SDR outsourcing shop into a hybrid service. Their outbound SDR service pairs human reps with the graph8 AI platform, which handles sequencing, data enrichment, and multichannel targeting.

Strengths:

• Technology layer distinguishes CIENCE from purely human SDR agencies

• Lower entry price than SalesRoads or Belkins

• Multi-channel sequencing: phone, email, LinkedIn, and AI-driven touchpoints

Limitations:

• Best results require time to tune the AI platform to your specific market

• Person-level advertising not stated as a core service

Best for: Growth-stage companies with some outbound infrastructure already in place that want to add a tech-enabled SDR layer without building it internally.

Full Feature Comparison

Pricing may change. Always check the latest details on the vendor's website.

Decision Framework: Which B2B Cold Calling Service Is Right for You?

The Case for Running Digital Alongside B2B Cold Calling

Cold calling works. The data on that is clear. But the data on warm outreach is even clearer.

A prospect who has seen your brand in their feed, read a piece of thought leadership you published, and recognised your company name before the first call is a different conversation than a prospect receiving a cold approach with zero prior exposure.

Most outsource b2b cold calling services run their programmes in isolation from marketing. Reps call accounts that have never seen the brand. Response rates reflect that. Outsourcing the mechanics helps, but it cannot fix the awareness gap that makes cold outreach hard in the first place.

The integration model works differently. Hey Sid's Influence Loop runs Always On advertising and Authority Builder content against named accounts for 60 to 90 days. By the time Precision Connect sends a LinkedIn message or your SDR team picks up the phone, the prospect has context. The call is not cold. It is a continuation of a sequence they have already encountered.

The result: shorter sales cycles, higher meeting conversion, and pipeline that moves faster because trust is already in place before the first touchpoint.

This is not theoretical. Risk Ident cut its sales cycle by 2.5x using this model (client-reported). Devotion Ventures booked 45+ meetings in 4 months (client-reported).

For companies with 20 to 200 named target accounts and deal sizes above $30K, the combination of digital warming plus outbound calling consistently outperforms either channel running alone.

Book a demo: Hey Sid, Book a demo

FAQ

How much do B2B cold calling services cost?

Pricing ranges from around $2,400/mo for entry-level tech-enabled SDR services like CIENCE to $9,950/mo or more for premium agencies like SalesRoads. Most agencies in the middle of the market charge $3,500 to $6,000/mo depending on SDR seniority, call volume, and included channels. Always verify pricing directly with the vendor, as rates change.

Should I outsource B2B cold calling or build an in-house SDR team?

Outsourcing b2b cold calling services makes sense when you need pipeline faster than you can hire and train internal reps, or when your total addressable market does not justify a full-time SDR headcount. In-house teams are better for markets where deep product knowledge is required on every call, or where your brand position is strong enough that reps can lead with name recognition.

How long does it take to see results from an outsourced cold calling service?

Most agencies quote 60 to 90 days to reach consistent meeting flow. The first 30 days typically cover onboarding, messaging development, and initial call testing. Results improve after the first 60 days as reps refine messaging based on real objections. Budget for at least a 90-day pilot before evaluating ROI.

What is the difference between cold calling and appointment setting services?

Cold calling refers to the act of placing outbound calls to prospects with no prior relationship. Appointment setting services handle the full process: prospecting, calling, qualification, and booking a confirmed meeting on your sales calendar. Most b2b cold calling agencies today deliver appointment setting as their core outcome, not raw call volume.

Are B2B cold calling agencies effective for European and Nordic markets?

Most US-based cold calling agencies are optimised for North American markets and are less effective in Europe and Nordics, where business culture around unsolicited calls varies. GDPR also restricts how outbound call data can be sourced and used. For European accounts, combining digital outreach with targeted calling tends to outperform a pure cold-call approach. Hey Sid is designed for European and Nordic ICP environments with GDPR compliance in mind.

Sources

• SalesRoads, "Outbound Calling Services"

• SalesBread, "SalesRoads Reviews: Is It Worth the Price?"

• CIENCE, "Outbound SDR Services"

• Arvani Media, "CIENCE Pricing 2026: Full Cost Breakdown for SDR Outsourcing"

• Belkins, "B2B Appointment Setting"

• Martal Group, "B2B Sales Outsourcing"

• Callbox, "Multi-Channel B2B Lead Generation"

• SalesHive, "CIENCE Reviews, Pricing & Features (2026)"

• Hey Sid, "How It Works"

• Hey Sid, "Case Studies"

Related: Cold Calling B2B: Warm Up Prospects Before You Call 2026 | Hey Sid: Individual-Based Marketing Explained