Before you hire your next SDR: the pipeline math

1. What one SDR really costs

Source: The Bridge Group, 2025 SDR Metrics Report (351 B2B companies).

Add taxes, benefits, tools (data, sequencer, dialer) and manager time, and a fair estimate is $100K to $110K a year, or about $8,300 to $9,200 a month, fully loaded.

Also count the calendar. A req posted today, plus a hiring cycle (often 1 to 2 months, estimate), plus a 3-month ramp means full output arrives roughly 4 to 5 months from now.

2. What outbound email realistically produces

• Average cold email reply rate: 3.43% (Instantly, 2025 data) and 4.5% (Hunter, 31M emails, 2025).
• Top 10% of senders: 10.7% or more (Instantly).
• 58% of replies come from the first email and the rest from follow-ups (Instantly). Three messages roughly double total replies versus one (Hunter).
• Short wins: the best first emails are under 80 words (Instantly).

A reply is not a meeting. Many replies are "not now" or "wrong person." For planning, we assume 0.4% to 0.8% of new prospects turn into a meeting. That's our own conservative planning number, not an industry benchmark. At 500 new prospects a month, that's 2 to 4 meetings. Better targeting and sharper triggers move it up. A bad list moves it to zero.

3. The three ways to get more pipeline

Make your AEs prospect

Free on paper. But reps already spend only about 28% of their week actually selling (Salesforce State of Sales, 5th edition, surveyed 2022), and every prospecting hour comes out of that. Works best when you sell to fewer than about 200 named accounts at a high deal size.

Hire an SDR

Best when outreach needs phone and multichannel work, accounts are complex, and someone will actually coach them every week. Worst when nobody owns their ramp, or when you haven't proven which message works yet.

Outsource or automate the top of the funnel

An agency, an AI SDR tool, or a done-for-you service like ours. Best when you need email volume fast, want to test a new segment before hiring for it, or want your AEs closing instead of list-building. Worst when your buyers only respond to phone or in-person, or when you can't follow up on the leads it produces.

These aren't either/or. Plenty of teams automate research and first-touch email now, then hire SDRs later for the segments that prove out.

4. Your 5-minute worksheet

1. Meetings your AEs need per month to hit plan: ____
2. Meetings they generate today: ____ → gap: ____
3. Fully loaded monthly cost of the option you're considering: $____
4. Realistic meetings it adds per month (plan for the 60% attainment reality, not the quota): ____
5. Cost per meeting = line 3 ÷ line 4 = $____. Compare it to what a meeting is worth to you (win rate × average deal size).

5. Do these 7 things before you post the req

1. Write your ideal customer in one sentence a stranger could build a list from.
2. Pull 500 accounts that match it. If you can't find 500, an SDR will run out of targets.
3. Pick 3 triggers that mean "they need us now": a new sales leader, hiring reps, funding, a new product line.
4. Prove the message. Send 100 personal emails yourself. If you can't get a few positive replies, a hire won't fix the message.
5. Set up deliverability (SPF, DKIM, DMARC, a separate sending domain) before anyone sends at volume.
6. Define the handoff: what counts as a qualified meeting, and who picks it up within a day.
7. Name the person who will coach the SDR every week. If there isn't one, don't hire yet.