The shortlist
A disclosure before anything else: this list lives on our site and we are first on it. Judge the whole page by how fairly we describe the other six. If those descriptions help you choose someone else, the list did its job.
BEST FOR: FUNDED B2B TEAMS THAT WANT THE WHOLE CHAIN OWNED BY THE PEOPLE WHO BUILT IT
Yes, this is our site and we put ourselves first. The case: a model trained on 4,000,000 of our own sends writes the copy, we build and own the sending infrastructure rather than renting it, every reply is answered inside 30 minutes, and the receipts are published on this site for you to inspect: 50 captured outcomes, client backers, the lot. Two co-founders run every build; there is no account-manager layer. And you can test us before paying anything: a written read on your current sequence, the same working day, no call.
BEST FOR: LARGER TEAMS THAT WANT AN ESTABLISHED APPOINTMENT-SETTING OPERATION
Belkins is known for being the biggest name in the category, the one you will meet in every search result. It runs full appointment-setting engagements with a large delivery team and a long client list across many industries. If you want scale, process maturity and a vendor your board has heard of, they are the safe pick; if you want the founders in your Slack, they are not built for that.
BEST FOR: US TEAMS THAT WANT COLD CALLING AND EMAIL UNDER ONE ROOF
SalesHive is known for combining cold email with a serious cold-calling arm, on flat-rate month-to-month pricing, as a large US agency. If your buyers answer phones and you want both channels coordinated by one vendor, they are a strong fit. Email-only engagements are not the centre of gravity here.
BEST FOR: NORTH AMERICAN TECH COMPANIES THAT WANT OUTSOURCED SDR CAPACITY
Martal Group is known for deep bench strength in tech verticals as a Canadian lead-generation firm, selling fractional SDR teams rather than a productised email system. Pick them when what you actually want is people, an outsourced sales team layered onto your process, rather than a sending machine.
BEST FOR: TEAMS THAT WANT SMALL-BATCH, LINKEDIN-LED PERSONALISATION
SalesBread is known for hand-personalised outreach at deliberately small scale, heavier on LinkedIn than email, with published per-lead pricing. The craft is real and the volume is intentionally low. Choose them for boutique attention on tight lists; look elsewhere when you need volume infrastructure.
BEST FOR: STARTUPS THAT WANT LINKEDIN OUTREACH FIRST, EMAIL SECOND
Cleverly is known for LinkedIn-first outreach at accessible price points, with cold email as a supporting channel. A sensible entry point when your ICP lives on LinkedIn and budgets are early-stage; less suited when deliverability engineering and email volume are the battle.
BEST FOR: ENTERPRISES THAT WANT DATA, SDRS AND ORCHESTRATION AT SCALE
CIENCE is known for selling managed SDR teams plus its own data and orchestration platform, as one of the largest players in the category. Built for enterprise motions with multi-channel programmes and headcount to match. For a seed-stage team it is usually more machine than the moment calls for.
How to choose
Want scale and a name your board knows: Belkins or CIENCE. Want calls and email coordinated: SalesHive. Want people more than machinery: Martal. Want boutique LinkedIn craft: SalesBread or Cleverly. Want the sending machine itself, corpus-trained copy, owned infrastructure, 30-minute replies, run by the two people who built it, with proof you can inspect before paying. That is what we do. Either way, run your current email through the free grader first; it will tell you things this list cannot.
WRITTEN · SAME WORKING DAY · NO CALL
EMPRA