Missed-call follow-up
Someone called after hours and never got a human.
Example workflow
Missed call logged → RVM drop within 5 minutes → callback hits a tracked number → AI agent books the appointment.
Product · Sonaira RVM
Deliver voicemail straight to the inbox, without ringing the phone.
Ringless voicemail drops land your message directly in a contact's voicemail box - no ring, no interruption, no wasted dial time. Record it yourself or generate it with an AI voice, drop it to thousands of contacts at once, and route every callback into the same inbox as the rest of your conversations.
RVM · campaign
Voicemail drop
No ring · direct to inbox
0:000:28
1,248
sent
94.8%
delivered
11.4%
responses
SJSarah Johnson9:14 AM
MCMichael Carter8:47 AM
EDEmily Davis8:12 AM
By the numbers
94%+
Delivery rate
Mobile carriers
3 in 4
Listen-through
Play the full message
8-14%
Callback rate
Typical warm list
10k/hr
Throughput
Per campaign
The idea
Higher reach. More opportunities. Real results.
No ring
The handset never rings, so you reach people without interrupting them - and without burning agent dial time.
Direct to voicemail
Your recorded message is placed straight into the voicemail box, with delivery confirmed per contact.
More conversations
Callbacks come back to a tracked number and land in your inbox, queue, or AI agent, fully attributed to the drop.
How it works
From message to callback, in four steps.
- Step 01Create the message
Record in-browser, upload audio, or generate it with an AI voice from text - personalization tokens included.
- Step 02Load your list
Upload a CSV or sync a CRM segment. Suppression lists and DNC checks run automatically.
- Step 03Schedule the drop
Pick send windows, respect local time zones and quiet hours, and throttle to your preferred pace.
- Step 04Track and follow up
Watch deliveries, callbacks, and conversions live, then trigger SMS or an AI agent for anyone who does not respond.
Capabilities
Everything you can do with Sonaira RVM.
Bulk campaign drops
Send to thousands of contacts at once with pacing and per-campaign reporting.
AI or human voice
Record your own audio or generate natural AI speech - including a cloned voice - from text.
Personalization + transcripts
Merge first name, company, or appointment details, and store a transcript of every message dropped.
Scheduling & quiet hours
Time-zone aware windows so drops land when people actually check voicemail.
Callback tracking
Dedicated callback numbers attribute every return call to the exact campaign and contact.
Suppression & compliance
Consent records, DNC and suppression lists, opt-out handling, and full audit trails.
API & workflow triggers
Fire a drop from any event - missed call, abandoned cart, unpaid invoice - through Sonaira Flow or the API.
AI agent follow-up
Hand callbacks to an AI voice agent that qualifies, books, or routes to the right human.
Use it responsibly
Built for compliant outreach.
Ringless voicemail is a powerful channel, and it is regulated like one. Sonaira RVM keeps consent records with every contact, enforces suppression and do-not-contact lists before a drop goes out, honors state and federal quiet hours by local time zone, and captures opt-outs from callbacks and replies automatically. Every campaign leaves an exportable audit trail, and our team helps you review scripts and consent sources before your first send.
Old vs. new
Manual dialing vs. ringless voicemail.
Legacy stack
With Sonaira
- Agents burn hours dialing to leave the same messageOne recording drops to thousands of inboxes in minutes
- Interrupting calls that get ignored or blockedNo ring - the message waits until the contact is ready
- No idea who heard the messagePer-contact delivery, listen, and callback tracking
- Callbacks land nowhere and go coldCallbacks route to your inbox, queue, or AI agent instantly
In practice
What teams do with RVM.
Quote and cart revival
Open quotes and abandoned carts going stale in the CRM.
Example workflow
CRM segment syncs → personalized drop with the quote amount → callbacks routed to the owning rep.
Payment & renewal reminders
Invoices or subscriptions about to lapse.
Example workflow
Due-date trigger → friendly voicemail reminder → SMS with the pay link to anyone who does not respond.
Aged lead re-engagement
Thousands of old leads nobody has time to call.
Example workflow
List uploaded → scheduled drops across time zones → only warm callbacks reach your team.
Appointment reminders
No-shows costing real revenue every week.
Example workflow
Calendar sync → reminder drop 24 hours out → reschedule handled by the AI agent on callback.
Announcements & promos
A new location, event, or limited-time offer.
Example workflow
Consented list → branded voicemail from the owner → callbacks and conversions tracked per campaign.
"We dropped one voicemail to our aged lead list and booked more appointments in a week than our team had in the previous month of manual dialing."
12.6%
Callback rate
Plays nice with your stack
SalesforceHubSpotZendeskIntercomSlackMicrosoft TeamsGoogle WorkspaceTwilioStripeNotionZapierMCP
Related products
Built into these Sonaira products.
FAQ
Questions, answered.
- It is a voicemail delivered straight into a contact's voicemail box without the handset ringing. The person sees a new voicemail notification and listens whenever it suits them, which is why drops get heard far more often than cold calls get answered.
Put your message in every inbox, without a single ring.
Launch your first ringless voicemail campaign in minutes, or top up RVM credits and start dropping today.