What a sales voicemail is actually for
Ask most SDRs why they leave a voicemail and they will say "to get a callback". That goal sets them up to fail. In Gong Labs' analysis of more than 300 million cold calls, the honest verdict on callbacks is that you will rarely get one. The same analysis found the real payoff somewhere else: reps who left voicemails saw their email reply rate rise from 2.73% to 5.87%.
So write every voicemail as the trailer for an email. The prospect hears a real human say their name and one specific reason, then sees an email from the same person with the same subject a few minutes later. That recognition is what earns the reply. A callback is a bonus, not the target.
The cost side, stated honestly
Voicemails are not free. Gong's data also found that leaving them takes time you could spend dialing (they estimate 25% more calls in the same time) and that connect rates on later dials to the same prospect were lower after a voicemail (5.17% versus 7.18% in their data), because the message tells the prospect a salesperson is calling. That is why the rule below is "at most two", placed deliberately, not "leave one every time".
| Finding | Number | What to do with it |
|---|---|---|
| Email reply rate, no voicemail | 2.73% | Your baseline. Track your own. |
| Email reply rate, with voicemail | 5.87% | Pair every voicemail with an email sent within minutes. |
| Email reply rate, 3+ voicemails | 2.2% | Stop at two voicemails per prospect per sequence. |
| Later connect rate after a voicemail | 5.17% vs 7.18% | Do not leave one on the first few dials of a sequence. |
When to leave a voicemail, and when to hang up
The decision takes one second if you set the rules before the call block. Paste this table into your team's playbook and stop debating it call by call.
| Situation | Leave a voicemail? | Why |
|---|---|---|
| Attempt 1 or 2 of a new sequence | No | You keep the prospect's connect rate intact while you still have good odds of a live answer. |
| Attempt 3 or 4, email going out today | Yes (voicemail 1) | This is the first voicemail of the two. Send the email within 10 minutes. |
| A few days after voicemail 1, no reply | Yes (voicemail 2) | Add a peer or proof point. Still no pitch. |
| Already left two voicemails this sequence | No | A third one lowers your email reply rate in the Gong data. |
| Greeting is a general mailbox or a different name | No | You may not have the right person. Fix the record first (see build a cold call list). |
| You will redial this number later today | No | Save the voicemail for the attempt you plan to pair with an email. |
| Strong trigger event this week (funding, new role, hiring post) | Yes, even early | Timeliness outweighs the connect-rate cost. |
| Prospect booked and no-showed | Yes | This is a known contact, not a cold one. Be warm and give an easy reschedule. |
The 20-30 second structure
Every script below follows the same four parts. The first voicemail can be as short as 15 seconds (Gong recommends context only). The second can stretch to about 30 seconds because it adds one line of proof.
- Who (3 seconds)"Hi Dana, it's Sam Lee from Northwind." First name, full name, company. No "how are you", no "sorry to bother you".
- Why them (5-10 seconds)One specific thing you know about them: a hire, a launch, a tool they use, a post they wrote. This is the line that proves it isn't a blast.
- Why now (5 seconds, optional on voicemail 1)One sentence on what peers in the same spot ran into. A problem, not your product.
- Look for my email (5 seconds)Name the subject line. Say your number once, slowly, only if you want to. Never ask them to call back as the main ask.
What good sounds like vs what bad sounds like
| Bad | Good |
|---|---|
| "Hi, this is Sam with Northwind, we're the leading platform for..." | "Hi Dana, Sam Lee from Northwind. Saw you're hiring four SDRs in Austin." |
| Three value props and a case study | One observation and one problem peers mention |
| "Give me a call back at your earliest convenience at 512..." (twice, fast) | "I'm sending you an email titled 'Austin SDR ramp'. Worth a look." |
| Reading the script in a flat voice | Speaking at the pace you'd use leaving a message for a colleague |
| 45-90 seconds | 15-30 seconds |
8 sales voicemail scripts, word for word
Swap the bracketed parts. Every script assumes the matching email goes out within ten minutes. The voice lines are written to be read aloud, so contractions and short sentences are deliberate.
1. First touch (context only, about 15 seconds)
Rep:Hi [Dana], it's [Sam Lee] from [Northwind]. I noticed [you're hiring four SDRs in Austin]. I'm sending you a short email titled ["Austin SDR ramp"]. Worth a look when you get a minute. Thanks, [Dana].
When it works: you have a real, recent observation. When it backfires: the observation is generic ("I saw you're in SaaS"). If you have nothing specific, use script 2's peer angle instead.
2. Second touch (context plus proof, about 30 seconds)
Rep:Hi [Dana], [Sam] from [Northwind] again. Quick follow-up on [the Austin SDR hiring]. Most [sales leaders] I talk to who are adding reps that fast say [new hires burn their first month on bad numbers]. We work with [teams like yours] on exactly that. I replied on the same email thread, ["Austin SDR ramp"]. Thanks.
Only name customers or peers you are allowed to name. A vague but true "teams like yours" beats a specific name you shouldn't use.
3. Referral (internal or external)
Rep:Hi [Dana], it's [Sam] from [Northwind]. [Priya Shah] on your [RevOps] team suggested I reach out to you about [how your reps build call lists]. I'll send an email with [Priya] copied so you have the context. Subject is ["Priya suggested I reach out"]. Thanks.
Rule: the referral must be real. Copy the referrer on the email if they agreed to it. A made-up referral gets found out on the first reply and ends the account for your whole team.
4. Trigger event
Rep:Hi [Dana], [Sam] from [Northwind]. Congrats on [the new VP Sales role at Acme], saw it [on LinkedIn this week]. First 90 days in that seat, most people I talk to are [rebuilding the outbound plan]. I sent you an email with [one idea on that]. Subject: ["First 90 days at Acme"].
5. After an email they opened but didn't answer
Rep:Hi [Dana], [Sam] from [Northwind]. I sent you a note on [Tuesday] about [cutting the time your reps spend dialing dead numbers]. Rather than repeat it here, I added [one example] to that thread. It's the one titled ["Dead numbers"]. Thanks.
Don't say "I saw you opened my email". Open tracking is unreliable and it reads as surveillance. Refer to the email, not to their behavior.
6. Meeting no-show
Rep:Hi [Dana], [Sam] from [Northwind]. We had [2pm] on the calendar today, and I'm guessing something came up, no problem at all. I'll send two new times by email, or you can pick one from the link in the invite. Talk soon.
No guilt, no "I waited for 15 minutes". The goal is the reschedule. For more on cutting no-shows before they happen, see booking meetings from cold calls.
7. Gatekeeper or assistant pointed you here
Rep:Hi [Dana], [Sam] from [Northwind]. [Maria] at your front desk said this was the best line for you and that [mornings] are usually easier. I'll try you again [Thursday morning] and I'm sending a short email titled ["Maria pointed me to you"]. Thanks.
Naming the helpful person (truthfully) is a strong credibility signal. More on this in how to get past the gatekeeper.
8. Breakup
Rep:Hi [Dana], [Sam] from [Northwind]. I've reached out a few times about [SDR call lists] and haven't heard back, which usually means the timing is off. I'll stop calling. If [list quality] becomes a priority later, my email is in your inbox under ["Dead numbers"]. All the best.
Only leave a breakup voicemail if you haven't already used both voicemail slots in this sequence. If you have, make the breakup an email only.
Delivery: how to sound like a person
- Stand up and slow down. Most reps talk faster on voicemail than live. Aim for the pace of a message to a coworker.
- Drop your pitch at the end of sentences. Rising tone ("from Northwind?") sounds like asking permission.
- Say the number once, if at all, and chunk it: "five one two, five five five, zero one nine eight." Since the main ask is the email, the number is optional.
- Record yourself for one call block a week. Play back five voicemails. Cut any sentence that doesn't serve one of the four parts.
- Re-record or skip if you stumble badly. Some voicemail systems let you press a key to re-record; if yours does not, a clean hang-up beats a rambling message.
Where voicemail sits in a cadence
Here is a call-heavy, 14-business-day sequence that places the two voicemails where they do the most good. Adapt the days; keep the pairing of each voicemail with an email. The full set of example cadences is in sales cadence examples.
| Day | Touch | Voicemail? |
|---|---|---|
| 1 | Call (morning) + call (afternoon) | No |
| 2 | Email 1 (short, one observation) | n/a |
| 3 | Call | Yes: voicemail 1, then email 1 follow-up on the same thread within 10 minutes |
| 5 | LinkedIn connection or comment | n/a |
| 6 | Call x2 (different time windows) | No |
| 8 | Call | Yes: voicemail 2, then email 2 with one proof point |
| 10 | Call x2 | No |
| 12 | Email 3 (new angle) | n/a |
| 14 | Call, then breakup email | No (both voicemail slots used) |
Calling at different times across the sequence matters more than the voicemail itself. Use your own call data and the patterns in the best time to cold call to spread attempts across windows.
Voicemail drop and the consent line
Many dialers offer voicemail drop: when the dialer reaches a machine, it leaves a message you recorded in advance, and you move on to the next dial. Power and parallel dialers often pair it with answering machine detection. The appeal is time: you don't wait for the beep. The trade-off is that a pre-recorded message can't name today's trigger event, so it tends to sound generic unless you record several versions by segment.
There is also a compliance question. The FCC's consumer guidance says callers need consent before making an autodialed or prerecorded call to a wireless number (FCC), and in 2022 the FCC ruled that "ringless voicemail" to wireless phones is a call that requires consumer consent (FCC 22-85). Many B2B lists contain mobile numbers. Before you automate pre-recorded drops to them, get advice from your own counsel. A live voicemail spoken by the rep is the conservative default.
Seven voicemail mistakes to coach out
- Leaving one on every dial. It eats call time and, per Gong's data, lowers later connect rates. Two per sequence.
- Pitching. The moment the message sounds like an ad, it gets deleted. Save the pitch for the email.
- Asking for a callback as the main ask. Callbacks are rare. Point to the email.
- No email sent. A voicemail without a matching email within minutes wastes most of its value.
- Fake familiarity. "Hey, it's Sam, call me back" with no company, designed to sound like a friend, burns trust the second they work it out. Say who you are.
- Generic personalization. "I saw your company is growing" is not a reason. Name the specific thing.
- Not logging it. If the voicemail isn't logged in the CRM, the next rep (or you, next week) leaves a third. Logging is how you enforce the two-voicemail cap.
To see whether voicemails are helping, track email reply rate for prospects who got a voicemail against those who didn't, inside the same sequence, over a month. That's the metric the voicemail exists to move. More on building that view in cold calling metrics.
Frequently asked questions
How long should a sales voicemail be?
15 to 30 seconds. A first voicemail can be about 15 seconds with one observation and a pointer to your email. A second can run to about 30 seconds with one proof point. Anything over 30 seconds is usually a pitch, and pitches get deleted.
Should you leave a voicemail on a cold call?
Yes, but not every time. Gong Labs' analysis of 300M+ cold calls found email reply rates more than doubled when reps left voicemails, but fell below the no-voicemail baseline after three or more. Leave up to two per sequence, each paired with an email.
Should I ask the prospect to call me back?
Not as the main ask. Callbacks on cold voicemails are rare. Point the prospect to the email you're sending, with its subject line. You can say your number once at the end if you want to keep the option open.
What should a breakup voicemail say?
That you've reached out a few times, you'll stop, and where to find you if timing changes. Keep it respectful and short. If you've already left two voicemails in the sequence, send the breakup as an email instead.
Is voicemail drop legal for B2B sales?
It depends on the number and the consent you have. FCC guidance requires consent for autodialed or prerecorded calls to wireless numbers, and the FCC ruled in 2022 that ringless voicemail to wireless phones requires consent. Ask your counsel before automating pre-recorded drops to mobiles. This is not legal advice.
- 1.Gong Labs (vendor research), Should you leave voicemails when cold calling? Here's what the data says (2024)
- 2.Gong Labs (vendor research), The hidden power of cold calling: Insights from 300M calls (2024)
- 3.FCC, FCC Finds That 'Ringless Voicemails' Are Subject to Robocalling Rules (FCC 22-85) (2022)
- 4.FCC, Stop Unwanted Robocalls and Texts (consumer guide) (2026)
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