Cold email agencies in the US
48 agencies in the index offer cold email and serve buyers in the US. Ranked by the evidence on record, the first three are Belkins (Dover, US, from $5,000 a month), Hypergen (HQ not published, from $5,000 a month) and Leadium (Las Vegas, US, from $3,500 a month). Results depend as much on list quality and sending infrastructure as on copy, so ask who owns the domains, inboxes and data when the engagement ends. The largest market in the index; buyers span four main time zones, so send and call windows matter as much as copy. 23 of the 48 publish a monthly minimum, from $397 to $10,000, with a median of $5,000. 3 offer pay-per-meeting pricing and 4 offer pay-per-lead; the rest work on a retainer or do not say. Besides cold email, the services most often offered here are LinkedIn outreach, appointment setting and cold calling. 18 build on Clay, 11 work inside HubSpot and 27 use their own or undisclosed tools. 28 have a Clutch or G2 rating on file with the date it was read. Before signing, ask for a sample sequence, the definition of a qualified meeting and who owns the domains and data afterward.
| # | Agency | HQ | Stack | From (monthly) | Model | Proof | Badges |
|---|---|---|---|---|---|---|---|
| 1 | Belkins↗ Most-cited agency across listicles; runs Folderly deliverability platform; 800+ clients claimed | Dover, US | HubSpot, Custom | $5,000 | Retainer | Clutch4.9 (234) | Verified DeliverabilityEditor's PickTop Outbound Agency US 2026Top Outbound Agency Europe 2026 |
| 2 | Hypergen↗ Lite plans from $6.5k/mo with 6-month minimum also reported | Not published | Clay, HubSpot | $5,000 | Retainer | Clutch5.0 (15) | Clay NativeVerified DeliverabilityEditor's PickTop Outbound Agency US 2026 |
| 3 | Leadium↗ Cold calling from $3.5k/mo, multichannel $4-5k; caps roster at ~30-35 clients | Las Vegas, US | Custom | $3,500 | Retainer | Clutch5.0 (88) | SDR Pod |
| 4 | LevelUp Leads↗ Account-based targeting for tech buyers | San Francisco, US | Custom | $3,000 | Retainer | Clutch5.0 (61) | SDR Pod |
| 5 | SalesRoads↗ Phone-first; priced per 4-week period; hybrid pay-per-held-meeting option reported | Fort Lauderdale, US | Custom | $6,950 | Hybrid | Clutch4.9 (69) | Pay-Per-MeetingSDR PodEditor's PickTop Outbound Agency US 2026 |
| 6 | SalesCaptain↗ ~$3.5k/mo commonly cited; signal-based outbound | London, UK | Clay, HubSpot | $3,500 | Retainer | Clutch4.7 (22) | Clay NativeEditor's PickTop Outbound Agency Europe 2026 |
| 7 | Cleverly↗ LinkedIn-first productized tiers $397-$997/mo; pay-per-lead option | Los Angeles, US | Custom | $397 | Hybrid | Clutch4.3 (85) | Editor's Pick |
| 8 | Martal Group↗ Reported $3.6k-$11k/mo; 3-4 month pilot | Toronto, CA | Custom | Ask | Retainer | G24.6 (135) | SDR PodEditor's PickTop Outbound Agency Europe 2026Top Outbound Agency Canada 2026Top Outbound Agency APAC 2026 |
| 9 | FullFunnel↗ | Boston, US | Clay, HubSpot | $5,000 | Retainer | G24.7 (72) | Clay Native |
| 10 | Outbound System↗ High-volume cold email; pay-per-lead option; month-to-month | US | Custom | Ask | Hybrid | G25.0 (34) | Verified Deliverability |
| 11 | Abstrakt Marketing Group↗ Also sells SEO/creative; 12-month contracts common | St. Louis, US | Custom | $5,250 | Retainer | Clutch4.6 (44) | SDR Pod |
| 12 | SalesHive↗ US-based SDRs; Starter $5k/mo, Growth $8k, Crush $12k; month-to-month | US | Custom | $5,000 | Retainer | G21.3 (4) | Verified DeliverabilitySDR PodEditor's Pick |
| 13 | demandDrive↗ Clay Studio Partner; pairs Clay builds with outsourced SDRs | Waltham, US | Clay, HubSpot | $5,000 | Retainer | G24.6 (69) | Clay NativeSDR Pod |
| 14 | RevBoss↗ Founder-led content + LinkedIn activation | Durham, US | Custom | $3,500 | Retainer | G24.6 (33) | none |
| 15 | Superhuman Prospecting↗ Cold-calling-first, email and LinkedIn as support | Not published | Custom | Ask | Not published | Clutch5.0 (46) | none |
| 16 | Rillation Revenue↗ Visitor ID + lookalike outbound; 30+ tools stack | New York, US | Clay, Smartlead | $5,000 | Retainer | n/a | Clay Native |
| 17 | IntentSignal↗ Retainer or hybrid retainer+performance; small client roster | US | Instantly, HubSpot, Custom | Ask | Retainer | Clutch5.0 (3) | Verified Deliverability |
| 18 | Revnew↗ Pay-per-meeting from ~$500 also offered | Claymont, US | Custom | $2,900 | Hybrid | Clutch4.6 (10) | Pay-Per-MeetingSDR Pod |
| 19 | (310) Creative↗ Performance-tier pricing $3k/$6k/$9k per month | US | Custom | $3,000 | Retainer | Clutch3.5 (3) | none |
| 20 | Groflo↗ Forward-deployed SDRs on top of Clay engine; quarterly terms | Miami, US | Clay, Instantly, Smartlead | $6,000 | Retainer | n/a | Clay NativeSDR Pod |
| 21 | Growth Alliance↗ Three principals; programs from $10k/mo, smaller work from $2.5k | Prague, CZ | Clay, HubSpot | $2,500 | Retainer | n/a | Clay Native |
| 22 | LeadHaste↗ Publisher of several self-ranked listicles | Sofia, BG | Clay, Custom | $2,500 | Retainer | n/a | Clay NativeVerified Deliverability |
| 23 | OneGTM↗ Done-with-you GTM engineering + advisory | US | Clay, Instantly | $5,000 | Retainer | n/a | Clay Native |
| 24 | RevenueHoop↗ RevOps + outbound campaign design | New York, US | Clay, HubSpot | $5,000 | Retainer | n/a | Clay Native |
| 25 | Workflows.io↗ AI RevOps + ABM sprints; 3-month minimum | New York, US | Clay, HubSpot | $5,000 | Retainer | n/a | Clay Native |
| 26 | memoryBlue↗ Embedded SDR teams; reps can transition to client teams | Tysons, US | Custom | Ask | Not published | G24.6 (345) | SDR Pod |
| 27 | Sopro↗ Also runs a Miami entity | Brighton, UK | Custom | Ask | Not published | G24.9 (17) | Top Outbound Agency UK 2026 |
| 28 | Leadbird↗ Pay-per-lead, no retainer | Not published | Custom | Per lead | Pay-per-lead | G24.6 (27) | Verified Deliverability |
| 29 | ColdIQ↗ Clay Elite Studio; remote Europe-based delivery; now also sells a GTM data API | Not published | Clay, Smartlead, Instantly, lemlist, Apollo | Ask | Not published | G22.5 (6) | Clay NativeEditor's Pick |
| 30 | Nerdy Joe↗ Low-volume hand-written emails; outcome-based pricing | Miami, US | Custom | Ask | Not published | Clutch3.7 (10) | Verified Deliverability |
| 31 | Growth Engine X↗ High-volume cold email; free test campaign; 3-month minimum | New York, US | Clay, Smartlead, Instantly | Ask | Retainer | n/a | Clay NativeVerified Deliverability |
| 32 | SalesBread↗ Manual LinkedIn outreach; ~$3k/mo + setup, month-to-month | US | Custom | $3,000 | Retainer | n/a | none |
| 33 | Terra Firma↗ Weekly outbound experiments for early-stage startups | New York, US | Clay | $10,000 | Retainer | n/a | Clay Native |
| 34 | Lead Gen Jay↗ Founder-brand agency; also sells training | Not published | Custom | Ask | Not published | Clutch5.0 (4) | Verified Deliverability |
| 35 | Spring Drive↗ London + New York | London, UK | Clay | Ask | Not published | Clutch4.9 (12) | Clay Native |
| 36 | OutreachBloom↗ Email-only done-for-you; no long-term contracts; now also sells Reddit/AI SEO | Seattle, US | Custom | Ask | Not published | Clutch5.0 (2) | Verified Deliverability |
| 37 | OneAway↗ Priced per 60-day cycle ($5k-$15k + per-meeting fee at top tier) | Not published | Custom | Ask | Hybrid | n/a | Pay-Per-MeetingVerified Deliverability |
| 38 | Vanderbuild↗ Retainer, project or pay-per-warm-lead | Warsaw, PL | Clay | Ask | Hybrid | n/a | Clay Native |
| 39 | C17↗ Positions as AI sales-as-a-service | US | HubSpot | Ask | Not published | n/a | SDR Pod |
| 40 | Understory↗ Clay Enterprise Partner; allbound model mixing paid media and outbound | Miami, US | Clay, HubSpot, Instantly | Ask | Not published | n/a | Clay Native |
| 41 | Lead Cookie↗ LinkedIn-led outreach for small B2B firms | Not published | Custom | Ask | Not published | Clutch5.0 (4) | none |
| 42 | Beanstalk Consulting↗ Productized flat-fee outbound | US | Custom | Ask | Not published | n/a | none |
| 43 | Lead Assassin↗ | Manila, PH | Clay | Ask | Not published | n/a | Clay Native |
| 44 | Pearl Lemon Leads↗ US arm at pearllemonleadsusa.com | London, UK | Custom | Ask | Not published | n/a | SDR Pod |
| 45 | The Deal Lab↗ | US | Custom | Ask | Not published | n/a | none |
| 46 | UltraGrowthMedia↗ Performance-aligned meeting targets; no long-term contracts | Not published | Custom | Ask | Not published | n/a | none |
| 47 | SalesPro Leads↗ Nevada-based | US | Custom | Ask | Not published | Clutch4.9 (7) | SDR Pod |
| 48 | Operatix↗ Reported $8-15k/mo; EMEA strength | London, UK | Custom | Ask | Retainer | n/a | SDR Pod |
Want two or three picks for your budget? Find your agency. A person replies within 24 hours.
What differs in the US
- Compliance:CAN-SPAM allows B2B cold email without prior consent if it identifies the sender, carries a postal address and honors opt-outs; the TCPA restricts autodialed calls and texts to mobile numbers.
- Budget:23 of the 48 publish a monthly minimum, from $397 to $10,000, with a median of $5,000.
Related pages
Questions
- How much does a cold email agency cost?
- 23 of the 48 publish a monthly minimum, from $397 to $10,000, with a median of $5,000. Setup fees and minimum terms vary, so ask for both before comparing monthly prices.
- Retainer or pay-per-meeting?
- A retainer buys an agreed scope each month and suits a defined ICP with at least three months of runway. Pay-per-meeting moves the risk to the agency and suits offers with a short sales cycle. On this page, 3 agencies offer pay-per-meeting pricing and 4 pay-per-lead.
- How long until results?
- New sending domains need two to three weeks of warm-up before volume goes out, and list building runs alongside it. Most agencies quote first meetings in weeks four to eight.
- Does the stack matter?
- 18 of the 48 build on Clay and 11 work inside HubSpot. Ask who owns the sending domains, the data and the workflows when the engagement ends; some agencies hand them over and some keep them.