How long should a LinkedIn voice note be?

30 to 45 seconds. The technical limit is 60 seconds, but attention drops sharply past 45 seconds. Brevity is structural to why the format works.

Should I send voice notes to cold connections?

No. Cold-connection voice notes produce 3 to 7% reply rate, often with negative-sentiment events. The format requires warm context to convert.

What is the reply rate on voice notes vs text DMs?

On warm connections: 18 to 30% voice note reply vs 10 to 20% text DM reply. On cold connections: 3 to 7% voice note vs 10 to 20% text DM. The lift only exists on warm context.

Should voice notes be rehearsed?

No. The format depends on authenticity. Rehearsed delivery removes the asymmetry advantage. One take, slight imperfections, natural pace.

LinkedIn Voice Notes: When They Work and When They're Cringe

Voice notes work for warm-connection follow-ups at 30 to 45 seconds with real signal. They become cringe on cold connections, when over 60 seconds, when over-rehearsed, or when used to pitch.

When They Work

Warm-connection follow-up after positive interaction, re-engaging stalled conversations, specific reaction to recent post, senior executive personas, warm referral context.

When They're Cringe

Cold-connection cold opens, rehearsed delivery, length over 60 seconds, generic content, pitching in the voice note.

Anatomy

Open with first name, anchor on signal, share one reaction, soft question, natural sign off. 30 to 45 seconds total.

Decision Tree

Warm connection? Real signal? One take? Under 45 seconds? All 4 yes to send. Otherwise, send a text DM.