Inbound SDR
By Amit Solanki, Co-founder, Floe · Updated
An inbound SDR (sales development representative) is the person who responds to buyers who come to you: demo requests, contact forms, chats and free-trial signups. They reply fast, qualify the lead against your criteria, and book qualified buyers with an account executive. Outbound SDRs, by contrast, start conversations with people who have not reached out.
Inbound SDR: a sales development rep who answers and qualifies inbound leads and books the qualified ones with an account executive.
What does an inbound SDR do?
- Responds. Demo requests, contact-sales forms, website chat, trial signups and event follow-ups, as fast as possible. See speed to lead.
- Qualifies. Asks about the problem, the timeline and who decides, often with a framework such as BANT, and checks fit against your ideal customer profile.
- Books and hands over. Gets the qualified buyer onto an account executive's calendar, with notes, following your lead routing rules.
- Recycles the rest. Leads that are not ready go back to marketing to nurture, and the CRM record says why.
How is an inbound SDR different from an outbound SDR?
| Inbound SDR | Outbound SDR | |
|---|---|---|
| Who starts the conversation | The buyer | The SDR |
| Main work | Respond, qualify, book | Research accounts, write sequences, call |
| What limits results | Response time and the quality of incoming leads | List quality, messaging and email deliverability |
| Typical channels | Forms, chat, call-backs and email | Email, phone and LinkedIn |
| What a good meeting means | A real buyer reached the right account executive quickly | A cold account became an opportunity |
Many teams run both, and the same rep often does both. Titles vary: some companies call outbound reps BDRs and inbound reps SDRs, some the reverse, and some use the two interchangeably.
Which metrics measure an inbound SDR?
- Speed to lead: the time from the buyer's request to the first personal response. In a 2007 study of six companies' call data, calling within 5 minutes rather than 30 came with 21 times the odds of qualifying the lead. (InsideSales.com and Oldroyd, October 2007)
- Contact rate: the share of inbound leads the SDR actually reaches.
- Meetings booked and held: held matters more, because a booked meeting the buyer skips costs the account executive's time. See demo no-show rate.
- Meeting-to-opportunity rate: the share of held meetings the account executive accepts as real opportunities. This is the check on qualification quality.
- Pipeline sourced: the value of the opportunities those meetings created.
The Bridge Group's 2025 survey of 351 B2B companies gives benchmarks for SDR teams as a whole; its public findings give no separate quota or performance figures for inbound reps. (The Bridge Group, February 2025)
- The median monthly quota is 10 meetings held: 16 where the SDR's job is an introduction, 9 where the meeting must be fully qualified.
- 60% of SDRs were at quota, the lowest share in the study's history.
- Ramp averages 3.0 months, and average tenure is 1.9 years.
- Teams run 1 SDR to 2.4 account executives.
- Median on-target earnings are $80K: $55K base and $25K variable.
- Inbound-only teams tie SDRs to account executives' territories less often: 40% of them, against 82% of all teams.
How is an inbound SDR different from an AI SDR?
An AI SDR is software that does some of this job: it answers inbound leads in chat or email, qualifies them and books meetings. In the same Bridge Group survey, 2025 was the first year AI SDRs appeared as a distinct category, at 1% of respondents. That measures adoption, not results; we found no public study with a stated method that compares AI SDRs with human ones.
Where does an AI demo agent fit alongside an inbound SDR?
Many inbound requests are buyers who want to see the product before they talk to anyone, and the SDR's call is a step between them and the demo. An AI demo agent runs that demo on the website when the buyer asks, at any hour. It does not replace the SDR.
Floe is an AI demo agent, not an AI SDR. A visitor who wants to see the product gets a live, voice-led demo in your real product, and Floe asks your qualification questions as it goes. Afterwards your team gets a recap with the questions the buyer asked, and, when there is enough on record to judge, a lead score with a Hot, Warm or Cold tier; where your CRM delivery policy writes the contact, the answers to your questions go to your CRM with the lead. The SDR's follow-up starts with a buyer who has already seen the product and said what they need. AI lead qualification covers how that qualification works, and AI demo agent vs. AI SDR compares the two kinds of agent.
FAQ
What is an inbound SDR? An inbound SDR is a sales development rep who responds to buyers who reach out, such as demo requests, contact forms and chats. They reply fast, qualify the lead against your criteria and book qualified buyers with an account executive.
What is the difference between an inbound SDR and an outbound SDR? Who starts the conversation. An inbound SDR responds to buyers who came to you and is judged on speed and qualification. An outbound SDR contacts people who have not reached out and is judged on turning cold accounts into opportunities.
What is a typical SDR quota? In the Bridge Group's 2025 survey of 351 B2B companies, the median monthly quota was 10 meetings held: 16 where the job is an introduction and 9 where the meeting must be fully qualified. The public findings give no separate quota for inbound reps.
Will AI replace inbound SDRs? The evidence so far is about adoption, not results: AI SDRs were 1% of respondents in the Bridge Group's 2025 survey, and we found no public study with a stated method that compares them with human SDRs. AI can give every lead an immediate first response; people still handle follow-up and deals with several decision makers.
Is an inbound SDR the same as a BDR? It depends on the company. Some use BDR for outbound reps and SDR for inbound ones, some the reverse, and some use the titles interchangeably. Ask what the role spends its day on: responding to buyers who reach out is inbound work.