Compare outsourced SDR providers on seven checks before you sign, and ask for every answer in writing. In our view, three checks matter most: the meeting definition, who owns the domains and data, and the exit terms. Blesso is a provider, and we wrote this list so you can hold us to it too.
Key takeaways
- Put the written answers side by side before you compare anything else.
- Agree the meeting definition in writing: who qualifies a meeting and who decides when you disagree.
- Check who owns the sending domains and the data, and read the exit terms before the case studies.
- This list leaves out price on purpose. Compare price only after the seven answers are close.
Send every provider the same questions
Send the questions by email, so the answers exist in writing. Then fill in the scorecard at the end. An SDR is a sales development rep: the person who researches accounts, sends outbound messages and books first meetings for your closers. An outsourced provider does that work under contract.
1. Find out who does the work
Ask these questions:
- Who will do my outreach, and is it the same person each week?
- Does that person work for other clients at the same time? How many?
- Who manages them, and how often do I speak to that manager?
- What happens if that person leaves?
A good answer names a role and a number: one person, shared across a stated number of clients, with a named manager. A weak answer says "our team" and stops there.
If the provider uses software for part of the work, ask which steps a person reviews before a message goes out. Ask this of a human team and an AI team alike.
2. Name who qualifies a meeting and who breaks a tie
ColdCallMe, a cold-calling agency, calls this the most important and most-skipped question when you vet an agency. It says meetings booked without a written standard tend to fail when your closer takes the call.
Ask these questions:
- What counts as a qualified meeting?
- Do you count a meeting when you book it, when it takes place, or when my closer accepts it?
- Who decides when we disagree?
- What happens to a meeting where the prospect does not show up?
A good answer is a written standard with named criteria, such as the right job title, a fit account and a stated need. It also says what the provider rejects before a meeting reaches your calendar. A weak answer is "we book meetings with decision-makers."
3. Match the channels to where your buyers answer
Providers differ here, and so do buyers. Some run email only. Some add LinkedIn, phone calls or ads. The right mix depends on where your buyers answer.
Ask these questions:
- Which channels will you run for my account?
- What share of meetings you book come from each channel?
- If my buyers expect phone calls, who makes them?
A good answer matches the channels to your buyers and says plainly what the provider does not cover. If you need phone calls and the provider does not make them, you need to know before you sign.
4. Make sure you own the sending domains and the data
Outbound email goes out from sending domains and mailboxes. A registrar is the company where a domain is registered, and whoever holds that account controls the domain. A domain builds a sending reputation as it sends, and mailbox warm-up is the slow start that builds it. If the provider registers them in its own name, it keeps that reputation when you leave.
Vendisys, an outbound agency, lists sender domain ownership and data ownership among the contract terms to settle before signing. It notes that some agency contracts treat the prospect list as the agency's own work, licensed back to you only during the contract. Both sources sell outbound services, so treat their advice as a starting point and check each provider's own answer.
Ask these questions:
- Which domains will you send from? Is one of them my main business domain?
- Who registers those domains, and whose account are they in?
- Who receives the registrar recovery email? That person can take back control of the domain.
- Who owns the prospect list, the message copy and the replies?
- In what format do I get my data back, and by when?
A good answer says the domains sit in your registrar account, or transfer to you on a stated date. It also says you own the list, the copy and the reply history. A weak answer says "we handle all of that" with no transfer terms.
Ask about compliance too. The FTC publishes a CAN-SPAM compliance guide for business that covers commercial email. Vendisys suggests a contract cap on bounce rate, often about 2 percent, with list checks before each send. Ask who handles opt-outs and where the suppression list lives. That list records everyone who asked you to stop.
5. Ask for live access to messages and replies
Ask these questions:
- What will I see each week: sends, replies, calls, meetings?
- Can I read the actual messages and the replies, or only a summary?
- Does the activity show up in my CRM?
- Will I have an owner-level login to the campaign workspace?
A good answer gives you live access to the messages and replies. A monthly summary can hide weak work. Live access lets your closer check whether a meeting came from the account you meant to target, while a fix is still cheap.
6. Agree the trial criteria before work starts
A provider needs time to set up domains and warm mailboxes before it sends at volume, so ask what the first 30 days look like. Published figures vary, so treat them as ranges to test. DemandDrive, an SDR vendor, says to expect qualified meetings and early pipeline within 60 to 90 days. CallWhistle, another outsourcing firm, suggests a 60- or 90-day test period with clear KPIs instead of a 12-month contract on day one. In its public terms, Dialfyne, an outbound provider, puts mailbox warm-up at about two weeks.
Ask these questions:
- What happens in the first 30 days, week by week?
- Do you offer a short pilot? What do we both agree to measure?
- What do I get at the end of the pilot if I stop?
A good answer sets the pilot length and the criteria for continuing before work starts. Write them into the agreement.
7. Get the exit terms and the handoff list in writing
Read the exit terms before the case studies. The key question is what you receive when the work ends, and who on each side checks that it arrived. Vendisys lists three numbers worth asking about: a notice period of 30, 60 or 90 days, activity held at no less than the trailing 90-day average during that notice, and a data export within 14 days. ColdCallMe flags 12-month minimums with no opt-out as a red flag and prefers 30 to 90 day starts.
Ask these questions:
- What is the minimum term, and how much notice do I give?
- Does work continue at the same level during the notice period?
- What do I receive when we stop: domains, mailbox access, contact records, message copy, reply history, suppression list?
- Is there a fee if I hire the person who did my outreach?
A good answer lists each item you receive, in what format, by what date. Leadhaste, a cold email agency, makes the same point in its guide to contract terms. It warns that "reasonable assistance" can mean a helpful transition or a spreadsheet with names and no context. The handoff should have a date and an owner on each side.
Score each provider with one table
Copy this table. Fill in the written answers, not your impression of the sales call. Mark each cell clear, partial or missing. We would want a good reason for a missing cell in rows two, four or seven before signing.
| Check | What a clear answer looks like | Provider A | Provider B | Provider C |
|---|---|---|---|---|
| Who does the work | A named role, a client count and a manager | |||
| Qualified meeting | A written standard and a named person who decides disputes | |||
| Channels | Matched to your buyers, with gaps stated | |||
| Domains and data | You own both, or receive both by a stated date | |||
| Visibility | Live access to messages, replies and meetings | |||
| Trial | A set length and written criteria for continuing | |||
| Exit | A list of what you receive, in what format, by when |
Compare price last
Price is not on the list. Providers bundle different things into a fee: some include list building, tools and sending domains, and some bill them on top. Compare price after the seven answers are close, and ask each provider what its fee includes.
FAQ
What is the most important thing to compare?
In our view, the definition of a qualified meeting, and who decides when you and the provider disagree. ColdCallMe calls it the most-skipped question. Get the definition in writing before you sign.
Who should own the sending domains?
You should, or the contract should transfer them to you by a stated date when the work ends. A domain keeps its sending reputation, so a provider that keeps the domain keeps that reputation too.
How long should a trial with an outsourced SDR provider last?
Long enough to cover setup and warm-up, then enough weeks of real sending to judge. Agree the length and the criteria for continuing in writing before the work starts. Ask each provider what it needs and why.
Is an outsourced SDR provider the same as hiring an SDR?
No. A provider runs the work under contract, and a hire works for you directly. The comparison of Blesso and hiring an SDR covers when each one fits.Blesso runs outbound for B2B teams across email, LinkedIn, warm outreach and retargeting ads. It lists no phone channel, so tell us up front if your buyers expect calls. See how Blesso counts a meeting, or book a call and bring this checklist.