You’ve hired cold calling companies before. The first few months filled your calendar with meetings. A few months in, the quality of the leads collapsed. Prospects stopped showing up. The ones who did show had no budget or weren’t decision-makers.
When you asked what changed, you got vague answers. “Market saturation” or “We’re testing new messaging.” But the real problem wasn’t the vendor’s execution.
You were buying the wrong thing. You paid for dials, but you needed better operations.
Most B2B companies outsource cold calling because their closers resist prospecting, their SDRs have no strategy, their total addressable market (TAM) is getting quietly burned, and there’s no data on why deals aren’t moving.
The companies that solve these problems don’t win by making more calls; they win by making calls at opportune moments, when prospects take specific actions.
This article breaks down which cold calling companies can build your pipeline through signal-based calling and how to vet them before you sign a contract.
3 types of cold calling services
AI has significantly changed the cold calling game, as well as the options available. The market is now split into three distinct models.
Human-led agencies
With this model, your SDR doesn’t call until a prospect has performed a useful action first. They opened an email, visited your pricing page, or clicked a link in a sequence. The call happens for a clear reason. This is what’s meant by signal-based calling. Additionally, when the call gets through, the caller references the recently taken action directly.
“I saw you downloaded our guide on SDR outsourcing. I wanted to follow up.”
Is that even a “cold call” anymore? The context makes it feel different.
The numbers back it up, too. According to our own proprietary data, blind cold calls connect roughly 2–3% of the time. Signal-based calls made within minutes of a prospect taking action have a connection rate of 12–15%.
At Belkins, we use human-led signal-based calling. We can see when they’ve opened an email message three times in the last hour. We know they’re at the computer. We pick up the phone and call them right then and there.
The tradeoff is cost. For this to work, your sales and marketing operations have to be in order. The price for human-led, signal-based call agencies runs higher than a dialing shop. But if you’re selling deals over $50K or working in a market where one bad call to the wrong person can close a door permanently, the economics make sense.
AI-hybrid services
AI handles the work that slows SDRs down. It dials, scores leads, pulls call histories, and suggests talk tracks. When someone picks up, a human takes over.
The result is more calls per hour while maintaining the human edge and flexibility. A human can hear hesitation in someone’s voice, adapt mid-conversation, and handle a question that isn’t in any script. AI can’t do that, but it can make humans more efficient.
This model works well for mid-market companies with deals in the $15K–$50K range. It offers consistent volume for those who don’t want callers who sound like they’re reading from a card.
The limitation is depth. AI-assisted callers handle more conversations, but they spend less time preparing for each one. When a prospect asks a technical follow-up question mid-call, the AI can surface a suggested response, but a human who’s been briefed on the account for 20 minutes will always outperform one who was handed a talk track 30 seconds ago.
For deals under $50K with straightforward qualification criteria, that tradeoff might be acceptable. For enterprise accounts where one bad call to a VP will poison the relationship, it isn’t.
Fully automated AI voice agents
This is when software runs the entire conversation. No humans are involved at any point. The pitch, the qualifying questions, the follow-up — all automated.
It’s cheap. It scales. But most B2B buyers can tell it’s not a real person.
"They were almost spam callers, just robocallers. And that’s not what I’m looking for. I’m not looking for us to place 10,000 calls a day. I don’t want to people to get pissed off at our brand."
That’s a real prospect describing a previous vendor. It’s the most common complaint we hear from companies shopping for a replacement.
or simple, high-volume outreach with basic qualification criteria, AI voice agents can work. For enterprise B2B — where the person on the other end is a decision-maker giving you less than 10 seconds to make a first impression — this model is a liability.
5 best cold calling companies comparison
| Belkins | SalesHive | Leadium | SalesNash | Smithai | |
| Best for | Signal-based calling for enterprise deals | AI-hybrid volume with human callers | SMB outbound without in-house SDRs | Multilingual / international expansion | Inbound + outbound phone service for small businesses |
| Service model | Human-led | AI-hybrid | Human-led | Human-led, regional teams | AI-focused + live agents |
| Starting price | $5,500/month | $4,000/month | $2,000/month | $3,000/month | $95/month~ |
| Ideal deal size | $50K+ | $15K–$50K | Short-cycle / SMB | Any / international | SMB |
1. Belkins — Best for signal-based outreach
The difference between Belkins and most vendors is that we wait for signals before we start dialing. It’s why our connection rates and meeting quality look different than the others on this list.
We were founded in 2017 and have grown to over 200 specialists focused exclusively on B2B lead generation and appointment setting. We don’t run customer service operations or inbound call handling. Every part of our model is built around one outcome: to get your sales team in front of qualified decision-makers.
Service model: Human-led signal-based calling with an omnichannel approach. Before any call goes out, our team has typically already made contact through email and LinkedIn. We’re looking for prospects who’ve engaged. They’ve opened something, clicked something, or responded in some way. The call comes after that groundwork is laid, which means we’re never cold pitching.
Industry focus: Our portfolio includes businesses from 50+ industries, but our core focus is on servicing technology, SaaS, healthcare, finance, manufacturing, and professional services. We work best with companies selling complex solutions with deal sizes over $50K, where the sales cycle is long and every relationship matters.
Notable clients: GE HealthCare, OpenTeleHealth, Grafi, IGS, AMI Global, SEKISUI, Omnicharge, Acer, HP, Sharp, Alectric Renewables, Clean Energy, Smappee, Lion Energy
Pricing: Our pricing is customized based on your company size, your TAM, the number of ideal customer segments, and how many calling agents your campaign requires.
The average starter engagement runs from $5,500/month, which includes 1,500 leads per month and 50+ guaranteed appointments per year. Every package covers manual lead research and validation, a dedicated calling agent, custom scripts, 24/7 reporting, appointment scheduling, no-show recovery, and ongoing strategy adjustments.
To get an exact number, book a scoping call with us(button).
Strengths: Our biggest strength is the multi-touch approach. Calling alone, based on internal data, generates a baseline volume of meetings. Add email to that and the number goes up 20%. Add LinkedIn and it goes up another 20–25%. The call isn’t the whole campaign; it’s one part of a coordinated sequence that makes each touch more effective than it would be on its own.
We build and enrich our own lead lists. We don’t buy a CSV and hope the data is good. We source verified direct mobile numbers, which matter more than most companies realize. In a remote-first world, office main lines rarely reach the right person. Mobile numbers do.
We’ve also developed internal systems for intent signal tracking, CRM integration, and campaign reporting. Every call is recorded. Every outcome, including why a prospect said no, gets logged directly into your HubSpot in real time, not exported to a spreadsheet at the end of the month.
Case studies:
- Startup Investment Platform (fintech): A U.S. platform with over 1.7 million investors was getting 3% lead conversion from previous vendors and struggling with an inconsistent pipeline. We started with email, then layered in LinkedIn and intent-based calling once signals indicated prospect engagement. Monthly meetings doubled from 15 to 30, lead conversion hit 9%, and 346 appointments were booked over 15 months. We ended up generating $434K in forecasted new revenue and a 125% ROI.
- Get Well (health tech): A 25-year-old patient engagement platform for enterprise hospital systems needed to break through to harder-to-reach personas like CIOs and Clinical Operations Directors. We built an omnichannel system where cold calling converted prospects who had already engaged. Of the three channels, calling delivered a 14.1% lead-to-meeting conversion rate. In 5.5 months, the results were 44 confirmed meetings, 22% overall lead-to-meeting conversion, 39% pipeline conversion from meetings to qualified opportunities, and 72% of all meetings booked being with new buyer personas the client had never successfully reached internally.
- Fire Safety and Protection (facility services): FSP had 30+ salespeople but no systematic outbound infrastructure: no prospect lists, no standardized scripts, and a sales team closing $500 deals when they should have been targeting six-figure contracts. We launched email and LinkedIn first, generating 3–4 appointments per week from day one. After validating messaging, cold calling was added and became a game-changer, reaching prospects with almost no digital footprint that email and LinkedIn couldn't touch. In 8 months, they had 341 appointments booked, $300K+ in confirmed new revenue, and $2M in total pipeline. FSP committed their entire 2026 business development budget to the partnership.
Awards: We’ve been recognized as one of the top 10 best companies in lead generation by G2 and Clutch. Other awards include Stevie Awards for Sales & Customer Service and Sales Ethics, Inc. Best in Business, Inc. Regionals 2024: Mid-Atlantic, and 2023 Globee Awards.
What clients say:
“Their commitment to helping us achieve success with our goals was thoroughly recognized through their hard work.”
— Veronica Andrews, Marketing Specialist at Cengage
“We had an increase in our pipeline of 200% in the first 3 months.”
— Roman Eaton, Head of Sales and Customer Success
“Their creative approach to breaking through the clutter of digital marketing is impressive.”
— Scott Chatten, Senior Director of Technology at Programmers.io
2. SalesHive — The best AI-hybrid cold calling service
SalesHive is a U.S.-based cold calling agency founded in 2016 that uses a proprietary AI platform to manage the operational side of outbound sales — dialing, lead scoring, call prep, and sequence management — while keeping trained human SDRs on every live call. They’ve set 117,000+ meetings for 1,500+ companies across technology, SaaS, healthcare, and professional services.
Service model: AI-hybrid. The proprietary platform handles the operational work; humans conduct every live conversation.
Industry focus: Technology, SaaS, FinTech, healthcare, manufacturing, professional services, and EdTech.
Notable clients: Mrs. Fields and 1,500+ companies across those verticals (most clients are not publicly named).
Pricing: U.S.-based SDR packages run $7,000–$12,000/month. Philippines-based packages run $4,500–$7,000/month. All packages are all-in, covering SDRs, data, tools, and management. Month-to-month contracts with no setup fees. A 6-month commitment unlocks discounted rates.
Strengths: Volume with quality control. SDRs run 150+ dials per day with AI surfacing real-time context during live calls: company news, pain points, suggested openers. Each conversation is personalized. The platform determines optimal call windows by persona rather than defaulting to generic time blocks.
Proprietary products:
- Power Dialer (an AI-assisted dialing platform with live coaching prompts and CRM sync);
- eMod (an AI email personalization engine that warms prospects before the call goes out). 98% data accuracy claimed.
- A market research company: Nearly 200 meetings set over the course of the engagement.
- An investor insights platform: Featured as a case study on their site; specific metrics available on request.
Awards: Top rating on G2; Trustpilot 4.3/5 (30+ reviews). 117,000+ meetings booked across 1,500+ B2B companies.
What clients say:
“Working with SalesHive has been a fantastic experience. Not only have they set almost 200 meetings for us, but we’ve also been extremely impressed with their expertise in developing our outbound strategy as we’ve grown internally.” — COO, Market Research Company
“We greatly appreciate working with the SalesHive team. They helped us double our sales meetings in a couple of months.” — Verified client review
3. Leadium — The best human-led outreach for small businesses
Leadium is a human-led outbound agency built for smaller companies that need a dedicated SDR team without the cost or risk of hiring one in-house. Their team handles everything: data research, cold calling, email, LinkedIn, and even physical gifting to prospects. While larger agencies are built for enterprise scale, Leadium is designed for SMBs that want hands-on, founder-led attention and a lower entry point to get their outbound program running.
Service model: Human-led, data-first outbound. A 100% U.S.-based SDR team backed by a global research team that hand-sources and verifies contact data in real time.
Industry focus: SaaS, cybersecurity, freight logistics, digital transformation, healthcare, e-commerce, staffing, and manufacturing.
Notable clients: Mitek, Amplitude Digital, All Dry Services, Bidspeed, Phunware, Amada Senior Care, Best Bees Company.
Pricing: Custom monthly retainers. Typical projects fall in the $10,000–$49,000 range over six months (roughly $2,000–$3,000/month to start). Month-to-month contracts available with a 30-day free trial.
Strengths: Data quality as a competitive advantage. Leadium verifies contact data in real time — no static databases. Their BANT/CHAMP qualification framework means SDRs only book meetings with people who have actual authority and budget.
Proprietary products:
- Channel-Optimized Lead Research (real-time human-verified contact data across 45+ industries);
- AI-powered enrichment and CRM routing; sub-5-minute response SLA for inbound lead qualification; multichannel outreach across email, phone, LinkedIn, SMS, and gifting.
- All Dry Services (restoration, 130+ U.S. locations): a 35% call connect rate, 20+ qualified meetings per month, a 18% email response rate.
- Bidspeed (SaaS, government procurement): 114 appointments set from 11,600 prospects, contributing to a 22% increase in month-over-month sales.
- Phunware (multiscreen platform): 300% in pipeline growth, 2x higher lead-to-meeting conversion vs. internal efforts.
- Best Bees Company (corporate beekeeping/ESG): a 75% increase in meetings set, 60% YoY growth in new client logos, 200 new leads in 90 days.
Awards: Clutch Top-Performing Sales Development Agency; GoodFirms recognized; Inc. 5000. $1B+ in revenue pipeline generated across 1,200+ organizations.
What clients say:
“Leadium is able to speak to our prospects as if they’re Amada themselves. They’re filling our pipeline in a way we couldn’t!” — Marcos Moura, Founder & COO, Amada Senior Care
“Finding Leadium changed the way our team operates. They’ve been able to fill our pipeline with the people we want to talk to so we can focus on beekeeping.” — Sam Jennings, Sales Manager, Best Bees Company
4. SalesNash — Best for multilingual cold calling
SalesNash (now DMT Business Development) specializes in reaching prospects across multiple languages and regions. Their SDR teams are organized by language and market. The person calling your German prospect is a native German speaker, not someone reading a translated script. They’re built for companies expanding into Europe or other international markets without hiring local sales staff in each country.
Service model: Human-led, with regional teams organized by language and market.
Industry focus: SaaS, health tech, digital marketing, IT consulting, biotech, and e-commerce. A strong track record in European expansion campaigns.
Notable clients: Yodeck, Productive, CDS Global Cloud, Gencove, Derm for Primary Care, Mecka, Concordia University.
Pricing:
- Starter: A dedicated team, email and LinkedIn outreach, 2,000+ leads/month, ~30 appointments per quarter.
- Standard: Everything in Starter plus 3,000+ leads/month and one additional channel (cold calling, WhatsApp, etc.)
- Custom: Full multichannel outreach, direct dials, hyper-personalized campaigns, multi-language outreach, and multiple managers.
Outreach engagements start at $3,000/month; research-only starts at $1,800/month.
Strengths: Multilingual execution without cultural friction. SalesNash builds separate targeting, messaging, and sequencing for each region and language — not a translated version of a single script. For companies expanding internationally, this is the difference between calls that land and calls that get ignored.
Proprietary products: No products or proprietary platform.
- Yodeck (SaaS, digital signage): Built a channel partner funnel for the European market, generating 18 appointments per month with 70% email open rates.
- CDS Global Cloud (IT/IaaS): 20 appointments in one month, including 4 enterprise-level appointments monthly.
- An IT & Consulting Services client: 42 appointments generated in a single month through cold calling and multichannel outreach.
Awards: Clutch-listed with verified client reviews. Over 1 million leads generated and 8,000+ appointments booked.
What clients say:
“Working with SalesNash for our cold calling has been a real turning point. They quickly figured out and contacted the right audience for us, delivering high-quality leads. We’ve noticed a big jump in appointments and a much stronger sales pipeline.” — Stuart Kent, CRO, Derm for Primary Care
“Working with SalesNash has been fantastic. They consistently provided quality leads, their team was always responsive, and they helped us reach the right decision-makers.” — Mark Steinberg, Head of Sales, Biovision
5. Smith.ai — The best virtual receptionist to handle inbound calls
Smith.ai provides businesses with remote agents who handle inbound calls and follow up with people who’ve already shown interest — like someone who filled out a form on your website. The same team covers both directions, so you’re not managing two separate services. They work best for smaller companies in legal, healthcare, and professional services where the sales process is straightforward.
Service model: AI-hybrid, with live North America-based agents. AI handles routing and initial qualification; humans step in for anything the AI can’t resolve.
Industry focus: Legal, healthcare, professional services, and SMB companies. Deep integrations with legal-specific tools (Clio, MyCase, LawPay, PracticePanther).
Notable clients: Express Legal Funding, Matador Solutions.
Pricing: AI Receptionist plans start at $95/month. Full live agent plans start at $300/month. Outbound Campaigns start at $600/month. All plans are month-to-month with no cancellation fees and a 30-day money-back guarantee.
Strengths: Speed-to-lead and 24/7 coverage. When a prospect fills out a form, Smith.ai calls them back immediately — no waiting for sales reps to check their inboxes. Over 7,000 integrations including Salesforce, HubSpot, Zapier, and Make sync every call outcome in real time.
Proprietary products:
- Call Intelligence dashboard (tracks appointment scheduling, call transfers, intake completion, and outcomes by keyword);
- AI Receptionist with live human escalation; bilingual call handling in English and Spanish.
- Express Legal Funding: After switching to Smith.ai for outbound follow-up on web leads, the company grew 6x. Strategy Director Aaron Winston moved all inbound and call handling to Smith.ai after seeing the outbound results.
- New Wave Financial Services: Used Smith.ai’s Outreach Campaigns to follow up with inbound leads, converting a significantly higher share of inquiries into booked appointments.
Awards: Ranked #2 Virtual Receptionist by Clutch; Top 10 Live Chat Service by Capterra; named one of the Top Voice Services Providers in the world by Clutch.
What clients say:
“Before Smith.ai, I’d have to monitor the lead inbox. Now, Smith.ai is making the outbound call as soon as the lead comes in. They vet it for me and I get to talk to only qualified leads.” — Client via Smith.ai
“Smith.ai has been a game-changer for us. They expertly handle the outbound calls to individuals who complete an online application on our website. They took the time to really learn about our company and its services, so we have total confidence when they do outreach on our behalf.” — Aaron Winston, Strategy Director, Express Legal Funding
What separates the best cold calling companies
The vendors that build pipeline aren’t making more calls; they’re making better calls. For that reason, evaluating vendors by price-per-dial or number of meetings doesn’t make much sense.
Here’s what the best do differently.
Calling based on prospect intent signals
The most effective calls are triggered by something the prospect just did. The best vendors also know when to call, not just who to call. Senior decision-makers such as plant managers, surgeons, and executives are often unreachable during normal business hours. This is when your calls are likely to reach staff and gatekeepers instead.
The same people pick up their own phone at 6:00 AM before the day starts. The vendors who understand this build it into their process.
Starting with an intent signal means the prospect is already warmed up. You let them tell you when to call and what to talk about.
Handling the conversation vs. reading a script
Here’s how one of our clients told us they feel about script-reading:
“The last thing we want is our prospects to hear HR Green is reaching out and this person doesn’t understand their business or is embarrassing themselves because they don’t understand the terminology.”
The biggest risk when outsourcing to enterprise accounts is that calls will go out and be received poorly.
If your SDR is calling a VP of Engineering or a Chief Financial Officer and they can’t answer a basic question about your product, the damage is immediate and often permanent. The prospect doesn’t complain. They just don’t respond to anything from your company again.
Generic dialers stick tightly to the script, even when the prospect throws them a curveball, effectively ending the pitch. The best callers treat the script as a starting point, not a safety net. They understand your industry well enough to hold a real conversation. They can handle objections, ask smart follow-up questions, and adapt to the conversation on-the-fly.
Calling mobile numbers instead of office landlines
In a remote and hybrid work environment, the main company line often goes to a receptionist, an automated system, or nowhere at all. The people you’re trying to reach aren’t sitting at a desk waiting for a call.
The best vendors source verified direct mobile numbers. This isn’t a nice-to-have; it’s the difference between a 2% connect rate and 10% one.
The best also make sure all of that data lives in your CRM. It’s logged automatically, in real time, as a reliable source of truth. It’s not in a spreadsheet they email you at the end of the month. Every call note, every objection, and every outcome gets recorded where you can see and act on it.
Preserving your market
A client explained to us, in so many words, how precious their company’s brand reputation is to them.
“Reliant doesn’t want our name out there bombarding people’s emails and their LinkedIn accounts. Because it happens to us. And it accomplishes one thing — it pisses us off.”
If your TAM is 1,000 companies, the math is brutal. Every bad call is a relationship you may never recover. One poorly trained caller, one tone-deaf script, or one call that goes out at the wrong time to the wrong person could close a door that you can’t reopen.
The right vendors use frequency caps so the same prospect isn’t getting hammered with calls until they’re forced to hit a roadblock. Callers don’t sound like telemarketers; they sound like they could work at your company. They’re educated, fluent, and conversational.
Visibility into every call
One of our clients shared their frustration with how lack of data tends to tie their hands when they’re asking for additional resources, budget, or understanding from leadership.
“I’m getting no information. I can’t report back to my boss and paint the picture. I need data to understand what’s happening. We just don’t have that.”
If you can’t listen to calls, you can’t manage quality. You also can’t catch the moment when the calls start going sideways, which is usually well before your pipeline numbers begin to reflect it.
The best vendors give you full access to call recordings, not cherry-picked examples. Random ones, on request, within 24 hours. If they’re proud of their work, they’ll have no problem with this. If they push back, assume the quality isn’t there.
Beyond recordings, you need to own the intelligence coming out of every conversation.
- Why did prospect say no?
- What objection came up most often this week?
- Did they mention a competitor?
That kind of information doesn’t just help you manage the vendor; it helps you improve your messaging, your positioning, and your product roadmap.
How to vet cold calling companies
Most evaluations go like this:
- Watch a demo
- Ask about pricing
- Sign a contract
Then you spend three months wondering why the meetings aren’t converting. Here’s our vetting process to help you avoid that.
Step 1: Ask to hear random call recordings by tomorrow
Ask: “Can I listen to three random call recordings from current clients, anonymized, by tomorrow?”
A good agency won’t hesitate. They’ll be proud to share because they know what their callers sound like. If they push back, citing privacy concerns as a blanket excuse, that tells you what you need to know about the quality of the conversations happening on your behalf.
If they do share those calls, what you’re listening for isn’t perfection. You’re listening for someone who sounds like they could work at your company. Do they know what they’re talking about? Are they able to handle a question without fumbling back to the script?
Step 2: Make them put their definition of a qualified meeting in writing
Ask: “How do you define a qualified meeting, and what happens if the prospect is a no-show or clearly unqualified?”
Low-tier vendors book whoever will take a call just to hit their monthly quota. They count a no-show as a meeting. They count a junior employee with no buying authority as a meeting. They count someone who agreed to talk just to get off the phone as a meeting.
The definition of a qualified lead should include:
- The right title
- Confirmed interest in the problem your company solves
- Appropriate budget authority
- Genuine timing
Often, the first two or three campaigns go well. But as future campaigns progress, lead quality tends to degrade.
Get the definition of a qualified lead written into the contract before you sign. That will lock in the protection you need. If they resist, that’s your answer.
Step 3: Confirm that the data will live in your CRM, not their spreadsheets
Ask: “Does your data sync directly into my CRM in real time, or do you use CSV exports?”
If they’re sending you a monthly export, you’re already operating blind. By the time you see the data, the window to act on it has closed. You can’t adjust messaging, coach your account executives on what objections are coming up, or flag a problem before it becomes a failed quarter.
Every objection, every competitor mentioned, every reason a prospect said no, and every signal that triggered the call needs to be owned in real-time. That information is the essential feedback loop that makes your entire go-to-market strategy work over time.
Step 4: Ask when a prospect’s behavior last triggered one of their calls
Ask: “Walk me through the last time a digital signal triggered a phone call for one of your clients.”
If the answer is some variation of “We work through the list in order,” they’re running a 2010 playbook in a 2026 market. Dialing lists from top to bottom is how you get 2% connection rates and prospects who’ve never heard of you hanging up in the first three seconds.
Here’s what a good answer looks like: a prospect opened the pricing email twice in one hour, so the SDR called within ten minutes and opened with “I saw you were looking at our pricing guide. I wanted to reach out directly.”
The right cold calling company is a partner
You don’t need your calendar filled with meetings your account executives can’t close. That’s what low-cost dialers and AI voice agents will bring you.
The right cold calling vendor becomes part of your sales team. It’s a partner giving insight into why deals move and why they don’t.
It knows the specific actions your prospects are taking and how and when to reach them directly on a mobile number. It logs every interaction and outcome into your CRM the moment it happens. You see the call and the operations behind it.
The right partner gives you full visibility. You see what’s working before the pipeline numbers tell you. That’s how you build an outbound engine that fills your calendar with meaningful appointments.
If you’re ready to learn how Belkins can help you get there, book a call with us.
