Appointment Setter vs SDR: What's the Difference?
Appointment setters turn existing leads into booked calls. SDRs find and qualify new prospects. Learn which role fits your sales process.
By the Zenstack team · · 2 min read
Both roles end with a meeting on a salesperson's calendar. They start in different places, and that changes who you should hire.
What an appointment setter does
An appointment setter works with leads that already exist: form fills, ad leads, old enquiries and no-shows. Their job is speed and follow-up:
- Call or text new leads within minutes
- Ask a few qualifying questions
- Book, confirm and reschedule appointments
- Re-engage old leads that went quiet
The key number is speed to lead: how quickly a new enquiry gets a reply. The faster the reply, the more likely the lead books.
What an SDR does
A sales development representative (SDR, sometimes called BDR) creates leads that did not exist before:
- Builds and researches prospect lists
- Runs cold email, calling and LinkedIn sequences
- Handles objections and qualifies interest
- Books meetings for the closers
The key number is qualified meetings booked from cold outreach.
Side by side
| Appointment setter | SDR | |
|---|---|---|
| Starting point | Leads you already have | Cold prospects |
| Main channels | Phone and text | Email, phone, LinkedIn |
| Core skill | Fast, persistent follow-up | Research, writing, handling objections |
| Typical sale | Shorter, higher volume | Longer, business to business |
| Measured by | Speed to lead, show-up rate | Qualified meetings booked |
Which one do you need
You need an appointment setter if you run ads or get regular enquiries, and leads wait hours for a reply or never get a second call. This is common for local services, coaching, home improvement, insurance and agencies.
You need an SDR if your pipeline is thin and you sell to other businesses. Someone has to go and find the buyers.
You may need both if you run ads and outbound at the same time. Keep them separate. The skills and daily rhythm are different, and one person doing both usually does neither well.
What to look for when hiring
For a setter, listen to a recorded call. Tone, clarity and confidence on the phone matter more than anything on a CV.
For an SDR, read a cold email they wrote and ask how they researched the prospect. Good SDRs are curious and write clearly.
For both, ask about their numbers at a previous job. People who were good at this know their numbers by heart.
Cost and how to hire
Both roles need daily coverage during your business hours. A full-time remote hire gives you that at a fixed monthly cost. Through Zenstack, rates start at $12 an hour, and every shortlisted candidate sends a 2-minute video introduction, so you hear how they sound before you meet.
For a full cost comparison, read how much an SDR costs. If you are deciding between an agency and your own rep, see SDR agency vs dedicated remote SDR.
Frequently asked questions
Is an appointment setter a junior SDR?
Not exactly. They are different jobs. Setters focus on fast follow-up with warm leads. SDRs focus on cold outreach. Some setters move into SDR roles, but strong setters are specialists.
What is the difference between an SDR and a BDR?
Many companies use the titles for the same job. Where they differ, SDRs usually follow up inbound leads and BDRs do cold outbound. Always check the job description, not the title.
Can an appointment setter work with my existing dialer and CRM?
Yes. A remote setter logs into your dialer, CRM and calendar, so nothing changes in your setup.