Quick answer
An SDR, or sales development rep, owns the top of the sales funnel. Their job is not to close deals, it is to start conversations: researching target accounts, reaching out across email, LinkedIn and phone, qualifying the replies, and booking qualified meetings for an account executive to run. SDRs are measured on meetings booked or pipeline created, not on closed revenue, because they hand off before the deal is won.
What are an SDR's core responsibilities?
The role comes down to four things done repeatedly and well:
- Build and prioritize a target list. Identify the right accounts and the right contacts inside them, based on your ICP, not just whoever is easy to find.
- Run outreach across channels. Send relevant, personalized email, LinkedIn and calls in a sequence, and follow up without being annoying.
- Qualify interest. Handle replies, answer first questions, and figure out whether a prospect is actually a fit before taking anyone's time with a meeting.
- Book qualified meetings. Hand a warm, qualified conversation to an account executive, with enough context that the AE can pick it up cleanly.
Underneath all of it is CRM hygiene: logging activity so pipeline and conversion stay visible and forecastable. For how this role sits next to the others, see SDR vs BDR vs AE.
What does an SDR's day look like?
Most SDR days are a blend of three modes of work, not one:
| Mode | What it involves | Why it matters |
|---|---|---|
| List and research | Finding accounts and contacts, noting a reason to reach out | Relevance is what earns a reply |
| Outreach | Sending sequences, following up, making calls | Volume plus relevance creates conversations |
| Conversations | Handling replies, qualifying, booking | This is where meetings actually come from |
A good SDR protects time for all three. The failure mode is spending the whole day in the inbox reacting, and never doing the research that makes the next batch of outreach land.
How is an SDR measured and paid?
Because SDRs do not close, measuring them on closed revenue would punish them for things they do not control. Sensible SDR metrics sit at the top of the funnel:
- Qualified meetings booked
- Qualified pipeline created (and how much of it the AE accepts)
- Activity as a leading indicator, not a goal in itself
Comp follows the same logic. SDR plans typically reward meetings booked or qualified pipeline, weighted more toward base salary than a closing role would be. The detail is in SDR compensation plans.
SDR vs appointment setter vs AE
These get blurred, so it helps to separate them:
- An appointment setter focuses narrowly on booking meetings, often from a list someone else built, and is judged mostly on volume.
- An SDR owns more of the motion: research, targeting, multichannel outreach, and qualification, and cares about whether the meeting was any good.
- An AE takes the qualified meeting and closes it.
The quality difference matters. Meetings booked with unqualified prospects waste your closers' time and make the whole funnel look broken. More on the closing handoff in what does an AE do.
What makes an SDR effective?
The best SDRs are not the ones who send the most emails. They are the ones whose outreach is relevant, whose qualification is honest, and who work inside a system that is set up to convert. An SDR dropped into a blank CRM with no scored list and no tested messaging will struggle no matter how hard they work, because they are being asked to invent the motion and run it at the same time. If you are hiring for the role, start from how to hire an SDR.
Where Enablemnt fits
An SDR performs only as well as the top-of-funnel system behind them. Hand a rep a scored, verified list, messaging tested against real objections, clean deliverability, and a CRM that makes pipeline visible, and they ramp fast. Hand them a blank system and they spend months building instead of selling.
Enablemnt acts as your embedded RevOps and outbound team and builds that system in a fixed 14-day sprint: the ICP and target list, the CRM, the tested messaging, and the deliverability setup, then runs the outbound live. You own all of it, so whether you hire an SDR or use an outsourced one, they walk into a motion that already works.
If you want the top-of-funnel engine built before you hire into it, tell us about your startup and we will map the fastest route to real pipeline.
Follow Enablemnt AI on LinkedInShort, practical posts on GTM, outbound and RevOps for early-stage B2B founders.FollowFrequently asked questions
- What does an SDR do day to day?
- An SDR spends the day researching target accounts, sending and following up on email and LinkedIn sequences, making calls, handling and qualifying replies, and booking meetings for account executives. The work is a mix of list building, outreach, and conversations, logged in the CRM so pipeline stays visible.
- Does an SDR close deals?
- No. An SDR owns the top of the funnel and hands qualified meetings to an account executive who runs and closes the deal. SDRs are measured on meetings booked or qualified pipeline created, not on closed revenue.
- What is the difference between an SDR and an appointment setter?
- They overlap, but an appointment setter focuses narrowly on booking meetings from a given list, while an SDR usually owns more of the motion, including research, targeting, and multichannel outreach, and cares about meeting quality, not just volume.
Keep reading
- SDR vs BDR vs AE: what's the difference?SDR vs BDR vs AE explained: what each role does, how they differ on inbound vs outbound and prospecting vs closing, and which one a startup needs first.
- What does an AE do?What does an AE do? An account executive runs discovery, demos, and negotiation to close deals, owning the middle and bottom of the funnel after the SDR.
- How to hire an SDRHow to hire an SDR for a B2B startup: where to source candidates, how to screen for the traits that matter, and an interview process that predicts performance.
- What is an outsourced SDR?An outsourced SDR explained: what they do, how outsourced SDRs differ from in-house, what they cost, and when they make sense for a B2B startup.
Filed under Building a sales team. Written by Enablemnt AI.