Outsourced SDR companies, compared
Updated August 2026 // by Mark Glazer, ReplyLead
The short answer: An outsourced SDR company runs sales development for you: list building, sending infrastructure, sequences, reply handling and meeting booking. The models differ far more than the marketing does. The table below compares seven providers on pricing model, whether a price is actually published, and who carries the risk. Only two of the seven publish a number at all, which is the single most useful filter when shortlisting.
ReplyLead is one of the providers listed. We have put ourselves first and said so, which is the same thing every other list in this category does without disclosing it. Judge the table on the columns, not the order.
How the providers compare
What actually separates them
Every provider in this category describes itself in almost identical language: ICP-matched lists, multi-channel sequences, qualified meetings. The marketing copy is not a differentiator. Four things are.
Whether a price exists in public. Five of the seven above do not publish one. That is not automatically a red flag, but it does mean the first two calls are about discovery rather than fit, and it makes genuine comparison impossible until you are already in a sales process.
Who owns the sending domains. If the provider sends from your primary domain, a deliverability problem becomes your company's email problem. Ask this before anything else. Dedicated sending domains that belong to the provider are the safer arrangement, and it is a yes or no question.
What counts as a meeting. Per-appointment pricing creates pressure to book anything with a pulse. Ask for the written qualification bar and what happens to a meeting that does not meet it.
Where the risk sits. A retainer is owed whether the quarter produced three deals or none. That is not dishonest, it is simply a different allocation of risk, and it should be a conscious choice rather than a default.
Who outsourcing suits, and who it does not
What a real programme produces
Most providers in this category publish no outcome numbers at all. Ours, measured end to end over one 12 month engagement, are below. They are one client's results, not an industry average, and they are the floor we plan against rather than a promise.
Common questions
What does an outsourced SDR company actually do?
It runs the top of your funnel: defining and building the target list, standing up and warming sending infrastructure, writing and testing sequences, working every reply by hand, qualifying against your criteria and booking the meeting. Your team runs the call and closes.
How much do outsourced SDR companies cost?
Of the seven compared above, only two publish a figure: Belkins states "from $4,000" and OutreachBloom states "$2,400 per month, month to month", both checked on 1 August 2026. The rest quote on a call. ReplyLead publishes its infrastructure cost across seven volume tiers on the cost page.
Is outsourcing cheaper than hiring an SDR?
It depends on ramp and utilisation rather than headline price. A US SDR is about $80,000 in on-target earnings (The Bridge Group, 2025) before tooling, and the tooling stack behind a real programme adds roughly $2,841 a month at 50,000 emails. The full comparison is on cold email agency versus in-house SDR.
Should I pay per appointment instead?
Per-appointment pricing sounds aligned but pays for calendar volume rather than revenue, which is a different incentive. The four models are compared on pay per appointment versus retainer and pay per lead agencies.
How is this list ordered?
ReplyLead is listed first and we have said so plainly. The comparison columns are what matter, and every claim in them is checkable against the provider's own site.