Disclosure: Newlead publishes this page and is one of the agencies on it. We are not on the lists we counted, so we appear separately at the end, marked as the publisher. Everything about the other agencies comes from their own websites, checked on 3 October 2026.
The short version
- Belkins, Callbox and CIENCE are named most often, each on 8 or more of the 11 published 2026 lists we checked.
- Seven more agencies are on at least 4 of those lists: Cleverly, Leadium, Martal Group, memoryBlue, Pearl Lemon Leads, SalesBread and SalesRoads.
- The biggest difference between them is the channel: phone-led SDR teams, multi-channel programs, LinkedIn-first outreach or cold email only.
- Five publish at least some prices: CIENCE, Cleverly, Leadium, Pearl Lemon Leads and SalesBread. The others share prices on request.
- Newlead, the publisher, runs cold email only and is listed separately.
How did we pick these agencies?
We counted the agencies named on 11 "best of" lists published or updated in 2026, and included every outbound agency named on at least 4 of them. Several of the lists are published by agencies that include themselves, so an agency's own list does not count toward its total.
- The lists. They come from software companies such as ZoomInfo, Cognism and Sequenzy, and from agencies such as Callbox, LevelUp Leads and SalesBread. All 11 are linked under Sources.
- Agencies only. We kept companies that run outreach for you. LeadGenius is on 6 of the lists but sells B2B contact data, and ZoomInfo and Cognism sell data platforms, so they are not included.
- Facts from the source. Services, channels, prices and terms come from each agency's own website. We left out ratings, review scores and results we could not check.
- No ranking. The table is in alphabetical order.
Just below the threshold: LevelUp Leads and OutreachBloom (3 lists each, not counting their own) and SalesHive and Lead Cookie (2 each). Newlead is on none of the 11 lists. So we did not meet our own rule, and we appear at the end, marked as the publisher. Spot something out of date? Email max@newlead.io.
How do the agencies compare?
They differ most in channel, in how much they publish about price and in who they are built for. Checked on each agency's own site on 3 October 2026.
| Agency | Service model | Channels | Published pricing | Best for |
|---|---|---|---|---|
| Belkins | Appointment setting, outsourced SDRs, ABM | Email, calls, LinkedIn | Monthly retainer packages, no figures | Meetings from several channels, startup to enterprise |
| Callbox | Lead generation, appointment setting, ABM | Phone, email, LinkedIn, chat, events | Not published | Tech companies selling in many countries |
| CIENCE | Managed SDR teams, go-to-market setup | Email, calls, ads, social | Yes, from a $5,000 setup | Building an SDR team with prices up front |
| Cleverly | Done-for-you outbound, appointment setting | Email, LinkedIn, calls | LinkedIn from $397/mo | A low entry price, or paying per lead |
| Leadium | Appointment setting, data sourcing | Email, calls, LinkedIn, gifting | From $3,500/mo, on its blog | Multi-channel outreach on month-to-month terms |
| Martal Group | Outsourced sales team | Email, LinkedIn, calls | Flat monthly fee, no figures | North American sales with onshore reps |
| memoryBlue | Outsourced SDRs and AEs | Phone-led | Not published | Tech and professional services firms |
| Pearl Lemon Leads | Lead generation by channel | Email, LinkedIn, calls and more | Cold email from £2,497/mo | UK buyers who want prices in pounds |
| SalesBread | Done-for-you LinkedIn and email | LinkedIn, email | 2-3k/month | LinkedIn-first outreach |
| SalesRoads | Outsourced SDR appointment setting | Email, calls | Not published | Phone and email appointment setting |
| Newlead (publisher) | Done-for-you cold email, leads in Slack | Cold email only | Not published | Interested leads by cold email in the US, UK and Sweden |
What does each agency offer?
All ten run outreach for you, but the channel mix, the focus and the terms differ. In alphabetical order:
Belkins
Belkins was founded in 2017 and has offices in the US, Poland and Ukraine. It sells appointment setting, outsourced SDRs, lead research and account-based marketing, using cold email, cold calling and LinkedIn, and says it works with startups, SMBs and enterprises. Pricing is a set of monthly retainer packages, with no figures on the page.
Callbox
Callbox was founded in 2004 and runs multi-channel outreach by phone, email, LinkedIn, chat and events. Its industry list covers software and SaaS, cloud, cybersecurity, AI, fintech, manufacturing, healthcare tech and ERP and CRM, and it lists 60+ countries. Its site says pricing varies with campaign scope, target market and engagement model.
CIENCE
CIENCE sells managed SDR teams (outbound, inbound and local) and go-to-market setup, with email, calling, ads and social as channels, for companies from startup to enterprise. It publishes a price list, shown under costs below, and says SDR capacity can be added without a long-term contract.
Cleverly
Cleverly is based in Los Angeles and runs done-for-you outbound by cold email, LinkedIn and cold calling, plus appointment setting and outsourced SDRs. LinkedIn lead generation starts at $397 a month. Its cold email plans are a flat monthly retainer or pay per lead, month-to-month with no contracts.
Leadium
Leadium is based in Las Vegas and offers appointment setting, data sourcing and inbound lead qualification. Its channels are outbound email, cold calling, LinkedIn prospecting, gifting and marketing events. Its blog gives flat prices of $3,500 a month for cold calling only and $4,000-$5,000 a month for multichannel, and its pricing page says all contracts are month to month.
Martal Group
Martal Group says it has 15 years in business and 200+ onshore sales executives, with a focus on B2B sales in North America. It runs email, LinkedIn and cold calling. Outbound lead generation is billed as a flat monthly fee, starting with a 3-month pilot and then a monthly subscription. Figures are not published.
memoryBlue
memoryBlue focuses on technology and professional services companies, from offices in five US cities, London and Singapore, and says it has 20+ years in business. It is phone-led: it says 85% of the meetings it books come from the phone. It has no single published rate, and engagements can be outcome-based or a standard retainer.
Pearl Lemon Leads
Pearl Lemon Leads is based in London and publishes monthly prices per channel in pounds, starting at £2,497 for cold email or LinkedIn. It also offers cold calling, multi-channel campaigns, appointment setting, PPC, SEO and podcast outreach.
SalesBread
SalesBread runs done-for-you outreach on LinkedIn and email for B2B companies. Its service page gives the monthly price as "2-3k/month", and its FAQ calls it a month-to-month service. Its site defines a lead as someone at the right company, with the right title and seniority, who replies with interest.
SalesRoads
SalesRoads is based in Boca Raton, Florida, and sells outsourced SDR appointment setting through email prospecting and outbound calling. It names manufacturing, SaaS, healthcare and the public sector among its markets. It does not publish prices, and its site says "Cancel anytime. No Commitments."
Where does Newlead fit, and when are we the wrong choice?
Newlead fits B2B companies that want interested leads from cold email, not calls or LinkedIn, and that sell in the US, the UK, Canada, Sweden or the rest of Europe.
Newlead AB is a Swedish agency based in Eskilstuna. We define your ICP with you, build and verify a list of decision-makers, write and test the copy, send from dedicated sending domains and inboxes separate from your main domain, and handle the replies. Every interested lead lands in your Slack with name, company, email and phone. Meeting booking is an optional add-on.
We publish our typical setup so you can compare it with any agency above: 4-6 sending domains, 100-250 inboxes, about 4 emails per inbox per day, plain text without tracking and a 4-email sequence over about three weeks. We don't publish prices. The scope depends on your market, volume and setup and is set on a 30 minute discovery call. We also offer a one-time implementation: we build the outbound system and you own it.
We are the wrong choice if:
- You want cold calling, LinkedIn outreach or ads. We run cold email only.
- You mainly sell to large US enterprises. In our own outbound, US enterprise took 2,500 or more people contacted per opportunity, so we point those buyers to other channels.
- You want an agency with many years of track record. We started in 2024, and our reviews are on Trustpilot.
- Nobody on your team can follow up on a new lead within a day or two.
Weighing us against one of the agencies above? See our Belkins alternative and CIENCE alternative pages, or how our B2B lead generation agency service works.
What do these agencies cost?
Five of the ten publish prices on their own sites. The other five share prices on request, and Newlead sets the scope on a discovery call.
| Agency | What its site publishes |
|---|---|
| CIENCE | A $5,000 one-time setup, then $2,000 a month for the strategy team and $499 a month for its platform. SDR capacity costs extra, from $1,500 to $6,500 a month per SDR by level and location, plus $1,000 onboarding per SDR. |
| Cleverly | LinkedIn lead generation from $397 a month. Cold email as a flat monthly retainer or pay per lead, with no figures shown. |
| Leadium | $3,500 a month for cold calling only, and $4,000-$5,000 a month for multichannel, on month to month terms (from its blog). |
| Pearl Lemon Leads | Cold email or LinkedIn from £2,497, cold calling from £2,997, multi-channel from £3,497 and appointment setting at £4,497, all per month. |
| SalesBread | "2-3k/month" |
What moves the price elsewhere: the channels, your market, how senior your buyers are, the volume and whether meetings are booked for you. For market price ranges with sources, read what B2B lead generation costs. To compare a retainer with paying per result, read pay per lead vs retainer.
How should you choose from this list?
Pick the channel first, then narrow the list by market, pricing and terms.
| If you want | Look at |
|---|---|
| Outsourced SDRs who book meetings by phone and email | memoryBlue, SalesRoads |
| One agency for email, calls and LinkedIn | Belkins, Callbox, Cleverly, Leadium, Martal Group, Pearl Lemon Leads |
| An SDR team with published prices | CIENCE |
| LinkedIn as a main channel | SalesBread, Cleverly, Pearl Lemon Leads |
| Campaigns across many countries | Callbox |
| A UK agency priced in pounds | Pearl Lemon Leads |
| Short commitments | Cleverly (cold email), Leadium, SalesBread, SalesRoads |
| Interested leads by cold email, delivered to your Slack | Newlead (publisher) |
Then ask every agency on your shortlist the same five questions:
- What exactly counts as a lead or a meeting? Get it in writing. Our guide to what a qualified B2B lead is helps you draft the definition.
- Which channels, and which domains do you send from? Cold email should go from dedicated sending domains, not your main domain. Ask how many emails each inbox sends per day.
- Who answers the replies, and how fast does a lead reach my team?
- What is the minimum term, and can we start with a pilot?
- What have you done in my market and niche, and how did you measure it?
Our full checklist is in how to choose a B2B lead generation agency.
What we see in our own campaigns
These numbers come from Newlead's own outbound, the campaigns we run to win our own clients, not from client campaigns. Across 24 campaigns we sent 371,590 emails to 143,319 decision-makers. Of those people, 1.89% replied (auto-replies excluded), and 0.62% of the emails bounced.
Two lessons from that data apply to any agency you compare:
- Worldwide reply rate. 5.33% reply rate across 421,456 people contacted for 33 clients in 2026, 55% above the 3.43% industry average (source: Instantly 2026 Cold Email Benchmark Report). We only count real human replies, not out-of-office.
- Copy matters. In one A/B test, the stronger first email got a 0.67% reply rate against 0.25%, a 2.6x difference.
So ask each agency for reply and bounce rates by market, and how it counts a reply. Our own planning numbers for small and mid-market companies are 40 to 50 people contacted per opportunity in the Nordics, about 100 in the UK and 280 to 370 in the US. We don't track opens, so we judge campaigns on replies. Full data: cold email benchmarks for 2026.
Sources
Last checked 3 October 2026.
Agency websites
- Belkins: homepage, about, pricing
- Callbox: homepage
- CIENCE: homepage, pricing
- Cleverly: cold email, LinkedIn lead generation
- Leadium: homepage, pricing, appointment setting pricing (blog)
- Martal Group: homepage, pricing
- memoryBlue: homepage
- Pearl Lemon Leads: homepage
- SalesBread: homepage, service page
- SalesRoads: homepage
- Left out as data providers: LeadGenius, ZoomInfo, Cognism
The 11 lists we counted
- ZoomInfo, B2B lead generation companies (updated 30 July 2026)
- Sequenzy, best B2B lead generation agencies (18 February 2026)
- Callbox, top B2B lead generation agencies (updated 24 August 2026)
- OutreachBloom, B2B lead generation agencies (updated 24 September 2026)
- LevelUp Leads, best B2B lead generation agencies for 2026 (updated 11 September 2026)
- The Smarketers, best B2B lead generation agencies 2026 (updated 7 July 2026)
- SalesBread, top B2B lead generation companies (updated 23 August 2026)
- Visdum, best B2B lead generation agencies in 2026 (21 July 2026)
- Leadriver, B2B lead generation companies to watch in 2026 (15 January 2026)
- Hypergen, best lead generation companies (23 September 2026)
- Cognism, lead generation companies (updated 6 July 2026)
Other
- Bridge Group, SDR metrics report 2025 (published 6 February 2025)