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Ringless voicemail (RVM) delivers a pre-recorded audio message directly to a contact’s voicemail inbox without ringing their phone. The contact sees a missed voicemail notification and can listen at their convenience. This is useful for follow-ups, appointment reminders, and non-intrusive outreach.

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How ringless voicemail works

  1. You record or upload an audio message
  2. The platform sends the message directly to the carrier’s voicemail server
  3. The contact’s phone does not ring — the voicemail appears as a new message
  4. The contact listens and can call back at their convenience
Ringless voicemail delivery depends on carrier support. Not all carriers accept RVM delivery, and success rates vary. Mobile carriers in the US have the highest delivery rates.

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Setting up voicemail drops

1

Create an audio file

Record your voicemail message. Keep it under 60 seconds for best engagement. Use a clear, natural tone — scripted but conversational. Save as MP3 or WAV format.
2

Upload to the platform

Navigate to Settings > Phone System > Voicemail Drops and click Add New. Upload your audio file and give it a descriptive name.
3

Test the drop

Send a test voicemail to your own phone number to verify audio quality and delivery.

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Using voicemail drops in workflows

Voicemail drops can be triggered automatically through workflow actions:
  1. In the Workflow Builder, add a Ringless Voicemail action
  2. Select the pre-recorded voicemail drop from your library
  3. Set any delay or conditions before the drop fires
  4. The voicemail is delivered to each contact that reaches this step
Common workflow use cases:
  • Follow up after a missed call
  • Appointment reminders 24 hours before
  • Re-engagement after a period of inactivity
  • Thank-you message after a purchase
  • Event reminders

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Creating effective voicemail messages

Aim for 20-40 seconds. Longer messages have lower listen-through rates. Get to the point quickly.
Start with your name and business: “Hi, this is Sarah from [Business Name]…”
Tell the contact what to do next: call back, visit a link, or reply to a text you will send.
Avoid reading robotically. A conversational tone gets more callbacks than a scripted one.
In your workflow, add an SMS action after the voicemail drop: “Hey [Name], I just left you a voicemail about [topic]. Let me know if you have any questions!”

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Compliance considerations

Ringless voicemail is subject to TCPA regulations. You must have prior express consent before sending RVM to contacts. Consent requirements are the same as for phone calls — contacts must have knowingly provided their phone number and agreed to receive communications.
  • Always obtain consent before sending voicemail drops
  • Include your business name in every message
  • Provide a way to opt out (e.g., “Reply STOP to any follow-up text”)
  • Respect quiet hours (8 AM - 9 PM in the recipient’s time zone)
  • Some states have additional restrictions on automated voice messages

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Cost

Ringless voicemail drops are billed per delivery attempt. Check your account’s current per-drop rate in Settings > Billing > Usage. Costs vary by destination country and carrier.

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Frequently asked questions

Delivery rates are highest on mobile phones. Landline support varies by carrier and may have lower success rates.
Yes. Your business phone number appears as the caller ID on the voicemail. Ensure you are using a number with CNAM registration for best results.
The delivery will fail. The platform logs the failure and you can retry later or follow up via another channel.
Last modified on March 6, 2026