How AI Voice Notes (lemlist + ElevenLabs) Are Quietly Changing Outreach

“Hey, it’s Alice. Quick one for you…”

It lands in your LinkedIn inbox. It’s a 28-second voice note in a warm, real voice (generated entirely by AI). You listen to the whole thing before you realize nobody ever touched a microphone.

This isn’t hype. It’s happening, and it’s working.

In this post, I’ll show you exactly how AI voice notes work inside lemlist, how to clone your voice in two minutes, which AI variables make each note sound written for one person, when to send them in a sequence, and what the results actually look like. I’ll also cover the other ways teams personalize LinkedIn outreach, including approaches lemlist doesn’t sell, so you can pick the one that fits your motion.

Why Voice Notes Work (But No One Uses Them at Scale)

Voice is the closest thing to a real conversation. It builds instant familiarity and cuts through noise in a way text never will.

The numbers back it up. ElevenLabs reported that voice notes receive 2x higher reply rates compared to text-only DMs, and that overall engagement has increased up to 20% among early adopters, with more campaigns launched and more frequent use of the platform. ElevenLabs is also a lemlist customer, and the same motion is behind how ElevenLabs grew outbound pipeline from 5% to 30%.

So why does almost nobody send them?

Because doing them manually is painful:

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  You freeze the second the mic turns on

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  You ramble, or you overcorrect and sound stiff

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  You re-record the same 20-second note four times for one prospect

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  You can’t scale it, because personalization is tricky with voice

So most reps skip it, or they reserve it for a handful of tier-1 accounts and forget about the rest of the list.

Enter AI voice notes. With ElevenLabs technology now directly integrated into lemlist, coupled with AI variable personalization, reps can send personalized voice notes at scale without ever touching a microphone.

The Other Ways Teams Personalize LinkedIn Outreach

Before I go deeper on lemlist, here’s the honest landscape. Voice isn’t the only way to break the text pattern on LinkedIn, and lemlist isn’t the only tool doing it.

Expandi pushes personalization past text with dynamic images and video, available through paid add-ons. That works well if your offer is visual or if your audience responds better to a screen recording than to audio.

La Growth Machine takes a different route on voice: you record one message and it goes out to a whole list, with LGM Voice AI generating a separate intro for every prospect on top of that single recording. It’s fast, and it keeps your real recorded voice in the body of the message.

Then there’s the manual route. Record every note yourself, one at a time. Highest quality, zero scale, and it’s the reason most teams abandon voice after a week.

lemlist sits in a different spot. You clone your voice once, then the entire note (not just the intro) is generated per prospect, with AI variables filling in the specifics. No single master recording to work around, no re-recording when your script changes. Pick whichever approach matches how you sell. I’m going to spend the rest of this article on the lemlist one, because it’s the one I know in detail.

How Do AI Voice Notes Work?

The concept is simple: clone your voice to read dynamic scripts as LinkedIn voice notes, recorded and sent straight from lemlist.

Here’s how:

1. 1.

   Write a script with personalization tokens using AI variables: company, ICP, challenge, icebreaker, and whatever else your data supports.

2. 2.

   Clone your voice in about 2 minutes, or pick one of the natural-sounding AI voices available.

3. 3.

   Listen to the result in lemlist, ready to be sent via LinkedIn.

Thanks to the ElevenLabs and lemlist collaboration, your script becomes a voice message that sounds just like you, automated inside your multichannel campaign. You can see the full mechanics on the AI voice messages product page.

On plans: AI voice notes sit with lemlist’s LinkedIn automation capabilities, so you’ll need a plan that includes LinkedIn actions rather than the email-only entry tier. Check the current plan comparison before you buy, since the feature set per tier moves as the product ships.

Why AI Variables Make This Even Smarter

You’ve cloned your voice and got that wow factor. Now here’s the second shift: AI Variables.

They turn generic scripts into personalized voice notes, at scale. With AI variables, you automatically generate content like icebreakers and PS lines for every lead on your list.

Let’s zoom in on icebreakers, because that’s where it really clicks.

An icebreaker is the first thing your lead hears. It’s the line that says, “this isn’t another mass-blast.” Mention their recent post, highlight a mutual connection, or drop a nod to their city. Small details, big impression.

Here’s the magic:

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  Create an AI variable like {{icebreaker}}

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  Use one of lemlist’s pre-built prompt templates to fetch information on the company, or write your own prompt. Here is an example below:

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  Now you can use it in your script and campaigns directly

And that’s one example out of many. Browse the cold outreach prompt library to personalize your emails and voice message scripts at scale.

Instead of spending hours personalizing intros, AI variables do the heavy lifting.

When to Use AI Voice Notes in Outreach

Timing matters. A voice note dropped at the wrong moment is just a weird message from a stranger. Here’s when we see them drive replies:

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  Day 2 follow-up. Pattern interrupt after a message that got no reply.

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  Right after a connect request is accepted. Warm opener, breaks inbox fatigue while you’re still fresh in their mind.

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  For demo invites. Adds warmth and clarity to the ask, which is exactly where text invites go cold.

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  Re-engagement after a lead goes quiet. Someone replied two months ago, then disappeared. A short voice note reopens the thread without the guilt-trip energy of a sixth written follow-up.

Bonus tip: send the note in the name of your CEO. Sounds bold? It works. Authority plus surprise, two reliable reply triggers.

What to Say?

Here’s a Voice Script Framework That Converts

Here’s the structure we use:

Trigger → Question → Teaser → CTA

It’s clear, it’s relevant, and it gives them a reason to hit reply. This is the exact motion that took ElevenLabs’s outbound pipeline from 5% to 30%.

Want more? Here are 3 templates, including AI variables.

1. The No-Reply Follow-Up

“Hey {{firstName}}, just following up on my last message. I shared a webinar on 3 founder-led sales mistakes, one that most early-stage teams fall into. If that resonates, happy to send it over.”

2. The Cold Opener

“Hey {{firstName}}, hope you don’t mind the voice note. Thought it might stand out from the 69 other messages today. Quick one: saw your team tackling [pain point]. Got a quick resource on how others are hitting {{outcome}}. Curious? I’ll send it your way.”

3. The Personalized Hook

“Hi {{firstName}}, noticed your work on {{topic}}. A client of ours helps {{ICP}} struggling with {{problem}}. Sounds familiar? I can show you the exact emails they use to book 25+ meetings/month. Let me know.”

Don’t just copy-paste these. Swap the proof point for yours, keep it under 30 seconds, and read it out loud once before you ship the campaign.

Why It Works: The Perfect Balance

Manual voice notes mean high friction. Scripted ones sound robotic.

AI hits the sweet spot:

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  Sounds human, thanks to ElevenLabs

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  Feels personal, thanks to AI variables

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  Scales across your whole list

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  Takes minutes to create

And for reps with mic anxiety, it removes the blocker entirely. You used to reserve this for tier-1 prospects. Now you can do it for everyone.

Final Thoughts

Voice notes were a tier-1-only tactic for years because the economics didn’t work. Twenty seconds of recording per prospect, multiplied by 400 prospects, equals a rep who quietly stops doing it by Thursday. Cloning your voice and pairing it with AI variables removes the recording bottleneck, and the reply data from ElevenLabs suggests the channel still has plenty of headroom before everyone piles in.

The honest caveat: a voice note won’t rescue a bad offer. AI applied to a broken system doesn’t fix it. It accelerates it. Get your ICP and your message right first, then add voice as the thing that makes people actually listen.

If you want to test it, build one sequence this week: connect request, wait two days, voice note with an {{icebreaker}} variable. Fifty leads. See what comes back.

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