Built for agencies

Why agencies choose MasterVox

Most voice-AI tools are built for solo operators or developers. MasterVox is built for agencies who resell voice AI as a service — white-label, multi-tenant, unlimited inbound, with the quality tooling to keep clients past month three.

The agency reseller pitch

Anyone can ship an AI receptionist. The hard part is keeping clients renewing past month three when the novelty wears off and the bookings either materialize or don't. That's where we focus:

  • We measure every call — outcome, sentiment, quality score, escalation flags. The weekly digest tells your client why their bookings went up or down.
  • We A/B test the prompts — when you tweak the agent's greeting or scope, we attribute outcomes per variant and tell you which one converts better with statistical confidence.
  • We catch the bad calls — refund requests, safety concerns, and legal threats — surfaced in a queue your client's owner opens within a day, not a week.

What to look for in an agency voice-AI platform

The features that actually decide whether your clients renew — and where MasterVox is built to win.

Built for resellers

Full white-label

Your own domain, logo, and colors — clients log into your brand and never see the platform underneath.

Multi-tenant sub-accounts

Manage every client from one agency login instead of juggling separate logins and dashboards.

One-click client onboarding

GoHighLevel custom-field snapshots import a client's setup, so you don't rebuild 20 fields by hand each time.

Built-in affiliate program

Earn 30% recurring for 12 months on every customer you refer — a passive line on top of your retainers.

Quality that keeps clients renewing

Per-call quality scoring

Every call graded automatically each night with coaching notes — proof to your client that the agent is improving.

Prompt A/B testing

Know which greeting or scope converts better, with statistical confidence — not guesswork.

Needs-Owner-Review queue

Refund requests, safety mentions, and legal flags surfaced in minutes, not discovered weeks later.

PII redaction on transcripts

Card numbers and sensitive identifiers scrubbed from saved transcripts — a privacy-conscious record of every call.

Owner-assist SMS escalation

When the agent doesn't know an answer, it texts the owner mid-call and relays the reply to the caller.

Languages & reach

30+ languages with mid-call switching

A caller can start in English and switch to Spanish at minute four — the agent follows seamlessly.

Bilingual knowledge packs

Per-language business info, so a Spanish caller hears Spanish pricing from your Spanish source — not a mid-sentence translation.

Integrations that work out of the box

Native GoHighLevel

Calendar, custom fields, contacts, and workflows — connected directly, not stitched together with Zapier.

Native Google Calendar booking

The agent books real appointments on your real calendar, with live availability checks.

Make.com / Zapier webhooks

Trigger any downstream automation you want from call events.

Honest, transparent pricing

Unlimited inbound on every plan

A flat monthly rate under a published fair-use threshold — no per-minute counting for typical small-business use.

Tier names match what's included

Pro 1,500 / Studio 2,100 / Scale 3,000 minutes per month. What the plan says is what you get.

Automatic overage, no surprises

Above the threshold, calls keep flowing at a flat $0.15/min — billed automatically, never flagged for an awkward plan-review call.

See plans & pricing →

Try it on a real phone line

Spin up an agent, put your number on it, take a real call. 7-day free trial. 30-day money-back guarantee on the first month after that.

Start your free trial →See full pricing