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Voice & VoIP

Ringless Voicemail (RVM)

Drop pre-recorded audio messages directly into voicemail inboxes without triggering a ring on the recipient's device. Our RVM platform delivers personalised voice messages at scale with real-time delivery tracking, scheduling by time zone, and full TCPA compliance tooling.

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How RVM Works

Voicemail Without the Ring

Ringless Voicemail uses a direct-to-voicemail delivery mechanism that bypasses the handset ringing stage. The audio file is deposited into the carrier voicemail system, triggering a standard voicemail notification on the recipient's device. The message appears like any other missed-call voicemail — without disturbing the recipient during the delivery process.

Features

RVM Platform Capabilities

Audio Management
Upload MP3 or WAV recordings, or generate messages using our integrated TTS engine with multiple voices and languages. Preview audio before campaign launch. Per-recipient personalised audio file support via API.
Time-Zone Scheduling
Schedule campaigns to deliver within legally compliant calling hours for each recipient's time zone. Configurable delivery windows (e.g., 9am–8pm local) prevent out-of-hours drops that could trigger compliance issues.
Delivery Analytics
Real-time dashboard shows successful deposits, carrier rejections, invalid numbers, and listen rates. CDRs include attempt time, carrier response, retry count, and final disposition per recipient.
DNC & TCPA Tools
Built-in Do-Not-Call list management with automatic suppression of opted-out numbers. TCPA consent tracking database, state-level quiet-hour enforcement, and audit trail for every message drop for legal defensibility.
Intelligent Retry
Configurable retry logic for failed delivery attempts — retry after carrier busy, subscriber unavailable, or temporary network errors. Maximum retry count and retry interval configurable per campaign.
REST API
Full REST API for campaign creation, recipient list upload, scheduling, status polling, and CDR retrieval. Webhook notifications push delivery events to your CRM or marketing automation platform in real time.
Technical Specifications

Specifications

Audio FormatsMP3, WAV (PCM 8/16-bit)
Max Audio Length120 seconds
ThroughputConfigurable CPS per campaign
Delivery MethodDirect-to-voicemail via SIP/PSTN
Supported CarriersAll major US carriers
Scheduling PrecisionPer-recipient time zone
Retry LogicConfigurable, max 5 attempts
APIREST JSON + Webhook events

Launch Your First RVM Campaign

Upload your audio, import your list, and schedule your first drop in minutes. Compliance tools and DNC management are built in from day one.

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