· 9 min read · Buyer's guide
Best B2B lead generation agencies in the US (2026): 10 compared
Ten B2B lead generation agencies for US buyers compared on what you are billed for, who makes the calls, the shortest contract and reviews, plus the US rules on B2B calls and cold email, quoted from the law.
Written by Orestas Nariunas
Chief Operating Officer at A-Sales
The B2B lead generation agencies most worth shortlisting for US buyers in 2026 are Belkins, Leadium, SalesRoads, CIENCE, Callbox, memoryBlue, SalesHive, Martal Group, Cleverly and A-Sales. Pick between them on what you are billed for, not on a ranking: a retainer, an SDR seat, a LinkedIn user, a lead or a held meeting each reward the agency for something different. We are one of the ten, so read this as a comparison written by a competitor; every fact about the others comes from their own pages or their Clutch profile, checked in November 2026, and we tell you where each one fits better than we do.
The short answer
- Leadium or SalesHive if you want callers who are based in the US.
- SalesRoads if you want dedicated SDRs by the four-week period, with no long-term commitment.
- Belkins if you want an email-led programme with a yearly appointment target built into the plan.
- CIENCE if you want an itemised price list and the choice of offshore, European or US SDRs.
- Callbox if you sell into several countries at once.
- memoryBlue if you want a dedicated SDR you may later hire yourself.
- Martal Group if you want a fixed pilot before a monthly plan.
- Cleverly if your budget is under $3,000 a month and your buyers answer on LinkedIn.
- A-Sales if you want calling-led outbound and would rather pay per held meeting than per month.
US lead generation agencies compared
| Agency | What you pay for | Published price | Who makes the calls | Shortest commitment | Clutch rating |
|---|---|---|---|---|---|
| Belkins | Monthly retainer with a yearly appointment target | Average starter price from $5,000 | Not published | Not published | 4.9 (234 reviews) |
| Leadium | Flat monthly fee | $3,500–$5,000/month | "100% US-based and US-employed" reps | Month-to-month | 5.0 (90 reviews) |
| SalesRoads | SDR per four-week period | $11,950 per 4 weeks per SDR | Dedicated SDRs; location not published | No long-term commitment | 4.9 (69 reviews) |
| CIENCE | Team and platform, plus each SDR | $2,499/month, plus SDRs from $1,750 offshore or $3,500 in the US | Offshore, European or US SDRs, by price | Month-to-month | 4.2 (142 reviews) |
| Callbox | Campaign pod (one SDR plus a team of six) | Estimated $6,667/month per pod | Offices in the US, UK, Asia-Pacific and Colombia | Flexible; not published | 4.6 (128 reviews) |
| memoryBlue | Retainer, or a lower base plus pay tied to meetings | Not published | Dedicated SDRs; 650+ across seven offices | Not published | 4.7 (23 reviews) |
| SalesHive | Flat monthly fee per plan | Custom quote | US-based core team; offshore option | Month-to-month or annual | 0.5 (1 review) |
| Martal Group | Flat monthly fee after a pilot | Not published | Team 60% US, 20% Canada | 3 or 4-month pilot | 4.8 (109 reviews) |
| Cleverly | Monthly plan per channel | $397–$997/user (LinkedIn); $697–$2,997 (appointment setting) | Not published | Cold email month-to-month | 4.3 (85 reviews) |
| A-Sales | Held meeting, or a managed month | From $500 per held meeting, or from $4,000/month | Covers US and EU time zones | Month-to-month, or 3/6/12 months | 4.9 (83 reviews) |
How we compared them
We left out scores out of ten. They cannot be checked, and they do not decide a lead generation engagement. Each agency is compared on what a buyer has to live with:
- What you pay for. The unit you are billed for decides what the agency is rewarded for: activity, seats, leads or held meetings.
- Who makes the calls. It decides the accent, the hours and, often, the price. Where an agency does not say, the table says so.
- The shortest commitment. Month-to-month, a pilot or a minimum term.
- Public reviews. The rating and review count on each Clutch profile, because Clutch shows both and anyone can check them.
The rules on B2B outreach in the US
US law is looser on B2B calls than on calls to consumers, and stricter on automated dialling and email than many buyers expect. Check that any agency you hire works to these three rules. This is not legal advice.
| Rule | What it says for B2B outreach | Source |
|---|---|---|
| Telemarketing Sales Rule | Calls between a telemarketer and a business are exempt, including the Do Not Call registry rule; the ban on misrepresentation still applies, and calls selling office or cleaning supplies are not exempt | 16 CFR 310.6(b)(7) |
| TCPA | No calls to a mobile number with an automatic dialing system or a prerecorded voice without prior express consent; no business exception; reaches callers outside the US | 47 U.S.C. 227(b) |
| CAN-SPAM | Every commercial email identifies itself as an advertisement unless the recipient consented, offers an opt-out and carries a physical postal address; opt-outs honoured within 10 business days | 15 U.S.C. 7704 |
Two consequences for choosing an agency:
- Ask how mobile numbers are dialled. Many US decision makers answer on a mobile. A floor that runs an automatic dialler into mobiles without consent is exposed under the TCPA whether the buyer is a business or not, and the law follows the call into the US even when the caller is offshore.
- Ask how opt-outs are kept. An agency sending email on your behalf has to stop within 10 business days of a request, so ask where the suppression list lives and whether it is shared across every campaign it runs for you.
Phone-led agencies
SalesRoads
A Boca Raton, Florida team, founded in 2007, that sells dedicated SDRs by the four-week period. Its pricing page shows $11,950 per four weeks for one SDR as the baseline, with no long-term commitment: "Cancel anytime."
Best for: dedicated SDRs on a short commitment. Watch for: it is one of the higher published prices here. Our A-Sales vs SalesRoads comparison works out how many held meetings one SDR has to book to beat paying per meeting.
SalesHive
A US outbound agency founded in 2016, with a US-based core calling team and an offshore option. Its pricing page lists custom-quoted plans by daily volume, from 100+ to 500+ touches a day, and says it does not price by the meeting.
Best for: a set amount of daily US calling at a flat fee. Watch for: one review on Clutch is too few to judge. Our A-Sales vs SalesHive comparison covers its cancellation terms.
memoryBlue
An outsourced SDR firm running programmes since 2003, with 650+ dedicated SDRs across seven offices. Its SDR services page says calls are "weighted heaviest", that a ramped SDR books 8 to 12 meetings a month, and that you can hire your SDR onto your own payroll.
Best for: a dedicated rep, long and complex technology sales. Watch for: no published rate. Our A-Sales vs memoryBlue comparison turns its meeting figure into a cost per held meeting.
A-Sales
That is us. Senior callers open the conversation with B2B cold calling, with email and LinkedIn alongside it, and book qualified meetings with your account executives. The team covers US and EU time zones.
- Pricing: from $4,000 a month for a managed engagement, or pay-per-appointment from $500 per held, qualified meeting once your target profile is proven. No-shows are not billed.
- Contract: month-to-month, or a 3, 6 or 12-month minimum with a larger discount the more you prepay.
- Reviews: 4.9 from 83 reviews on Clutch.
Best for: funded B2B teams with account executives ready for meetings. Watch for: it is outbound only and is not built for budgets below $4,000 a month.
Email-led and LinkedIn-led agencies
Belkins
A lead generation agency founded in 2017, listed on Clutch in Denver. Its outsourced SDR page gives an "average starter price" from $5,000, and its pricing page sells monthly retainer packages with a yearly appointment target: 30+, 100+ or 200+ by plan.
Best for: email-led outreach with a meeting target in the plan. Watch for: cold calling and voicemail are listed only in the 200+ package; the 100+ package has intent-based calling instead. More in our Belkins review and A-Sales vs Belkins comparison.
Leadium
A Las Vegas agency founded in 2016. Its comparison page publishes a flat $3,500 to $5,000 a month on month-to-month terms and says its reps are "100% US-based and US-employed". Its pricing FAQ says it guarantees activity, not a number of appointments.
Best for: a published flat fee with US callers. Watch for: no outcome guarantee. More in our Leadium review and A-Sales vs Leadium comparison.
Cleverly
A Los Angeles agency founded in 2018, built on LinkedIn outreach and cold email. It prices each channel separately: $397 to $997 a month per LinkedIn user and $697 to $2,997 a month for appointment setting, which it says is not pure pay-per-appointment.
Best for: budgets under $3,000 a month and buyers who answer on LinkedIn. Watch for: each of its pages quotes a different monthly unit. Our A-Sales vs Cleverly comparison sets them side by side.
Programmes priced per SDR, pod or pilot
CIENCE
A multichannel outbound provider founded in 2015. Its pricing page is the most itemised here: a $2,000 campaign team and a $499 platform a month, then SDRs from $1,750 a month offshore or $3,500 in the US and Europe, plus a performance bonus and a one-time setup fee, month to month.
Best for: buyers who want to choose the SDRs' region and price. Watch for: the total depends on how many SDRs you add. More in our CIENCE review and A-Sales vs CIENCE comparison.
Callbox
A global lead generation company founded in 2004, listed on Clutch in Los Angeles. Its pricing page estimates $6,667 a month per campaign pod, one SDR backed by a team of six, with the exact price given after a consultation.
Best for: campaigns in several countries and languages at once. Watch for: contract length is "flexible" but not published. More in our Callbox review and A-Sales vs Callbox comparison.
Martal Group
A Canadian agency, headquartered in Oakville, whose team its site puts at 60% in the US and 20% in Canada. Its pricing page starts with a three or four-month pilot, then a flat monthly fee it does not publish.
Best for: technology sellers who want a defined pilot. Watch for: it leads with email, then LinkedIn, then the phone. Our A-Sales vs Martal Group comparison puts its monthly funnel next to its pricing.
How to choose
- Decide the unit you want to pay for, then compare prices only within it. A month of activity, a lead and a held meeting are not the same purchase.
- Ask who makes the calls and where, and how mobile numbers are dialled.
- Ask for the shortest commitment in writing, and what happens to billing after you give notice.
- Ask how many of the meetings booked last quarter were held, and read the lowest-rated reviews on Clutch, not only the average.
For the appointment-setting view of the same market, see our list of the best B2B appointment setting companies; for costs, our guide to what an outsourced SDR costs.
Sources
- 16 CFR 310.6 and 310.4 (Telemarketing Sales Rule), checked 11 November 2026
- 47 U.S.C. 227 (TCPA) and 15 U.S.C. 7704 (CAN-SPAM), checked 11 November 2026
- Pricing pages: Belkins and outsourced SDR page, CIENCE, Callbox, Leadium, SalesRoads, checked 11 November 2026; SalesHive, memoryBlue, Martal Group, Cleverly, checked 2–10 November 2026
- Clutch profiles: Belkins, Leadium, SalesRoads, CIENCE, Callbox, memoryBlue, SalesHive, Martal Group, Cleverly, A-Sales
Frequently asked questions
The agencies most worth shortlisting for US buyers in 2026 are Belkins, Leadium, SalesRoads, CIENCE, Callbox, memoryBlue, SalesHive, Martal Group, Cleverly and A-Sales. They differ most on what you pay for: a monthly retainer, an SDR seat, a LinkedIn user, a lead, or a held meeting. Leadium and SalesHive say their callers are based in the US; Belkins, Leadium and Cleverly lead with email or LinkedIn.
Published prices in November 2026 run from $397 a month for one Cleverly LinkedIn user to $11,950 per four weeks for one SalesRoads SDR. Leadium publishes $3,500 to $5,000 a month, Belkins an average starter price from $5,000, Callbox an estimated $6,667 a month per campaign pod, and CIENCE $2,499 a month for its team and platform before SDRs from $1,750 each. A-Sales starts from $4,000 a month, or from $500 per held meeting once your target profile is proven.
Generally not. The FTC's Telemarketing Sales Rule exempts calls between a telemarketer and a business, including the Do Not Call registry rule, in 16 CFR 310.6(b)(7). The exemption does not cover calls selling nondurable office or cleaning supplies, and the rule's ban on misrepresentation still applies. This is not legal advice.
Partly. Section 227(b)(1)(A)(iii) of the TCPA bars calls to a mobile number made with an automatic telephone dialing system or an artificial or prerecorded voice without the called party's prior express consent, and it makes no exception for business numbers. It also reaches callers outside the US when the person called is in the US. The rule turns on how the call is made, not on who receives it.
Yes, under CAN-SPAM, which does not exempt business email. Every commercial email must identify itself as an advertisement unless the recipient consented, offer a way to opt out, and include a valid physical postal address, and an opt-out must be honoured within 10 business days (15 U.S.C. 7704).
