Your phone rings. Nobody answers. Your customer calls a competitor.
We build AI voice agents that answer every call 24/7, book appointments and send you the lead in under a minute.
No signup. Just call.
Incoming call
Bright Smile Dental
Ringing…
Calls missed by small businesses since you opened this page:
Pick your agent's voice
The voices we offer.
Tap a voice to hear it. Your callers will hear the one you choose.
The problem
Every unanswered call is a customer walking out the door.
Not a hunch. This is what the call data says.
- 44%
of business calls go unanswered.
Source: Invoca 2026 data on 70M calls, via JustCall - 27%
of calls are missed during business hours.
…and 40–60% after hours.
Source: Beancount - 69%
of missed business calls get no callback within 48 hours.
Source: Quo, 16M+ calls - $125–$350
estimated lost revenue per missed call for a service business.
Source: AInora
Hear how it handles your callers.
A missed call, minute by minute
7:42 PM
The phone rings.
Your shop is closed. A new customer needs you tonight.
7:43 PM
Voicemail.
They hear a beep. They hang up. No message.
7:45 PM
They call your competitor.
Someone picks up. The job is gone.
Rewind. Same call, with AI:
7:42 PM
The phone rings.
Your AI agent picks up on the first ring.
7:43 PM
It books the appointment.
Answers questions, checks your calendar, confirms the slot.
7:44 PM
You get a text.
Name, number, job details and booking. Before you've even checked your phone.
SMS · Zerobell
New booking: Sarah K., AC repair, Thu 9:00 AM. Caller wants a quote for 2 units.
- Dental clinics
- Med spas
- Law firms
- Real estate
- Restaurants
- Home services
- 24/7
- Books appointments
- SMS lead alerts
- Natural US English
Lost revenue calculator
What are missed calls costing you?
Move the sliders to match your business. The math updates live.
Estimated loss $6,495 per month. Recover up to $4,546 per month.
You're losing about
$6,495/month
With Zerobell, recover up to
$4,546/month
Our plan pays for itself in 4 days.
Estimate only, not a guarantee. Assumes 4.33 weeks per month, that an always-on AI agent recovers 70% of the revenue currently lost to missed calls, and a plan price of $599/month. Your results will vary.
How it works
Live in three steps. We do the heavy lifting.
- SMS follow-up to callers
- Books straight into your calendar
- Syncs with your CRM
- 1
We learn your business
Your calls, FAQs, prices, hours and booking rules. One 30-minute call with you is enough to start.
- 2
We build & test your agent
A custom AI voice agent trained on your business. We test it on real scenarios until it sounds like your best front-desk person.
- 3
It goes live on your number
Forward your existing number. Every call gets answered, and you get every lead by SMS instantly.
Hear it yourself
Hear exactly what your callers will hear.
Sample calls across industries. Press play.
New patient books a cleaning after hours
Sample call
Emergency AC repair, triaged and booked
Sample call
Intake call, qualified and handed to an attorney
Sample call
Table for 6 on a Friday night
Sample call
Better than a recording:
Industries
Built for businesses that live on the phone.
Everything included
An entire front desk. In one AI agent.
24/7 call answering
Nights, weekends, holidays and the lunch rush. First ring, every time.
Books into your calendar
Google Calendar, Calendly and most booking tools. No double bookings.
Text Alerts & Follow-Ups
Missed-call text-backs, booking confirmations, reminders and follow-ups, sent automatically from your business number. Every new lead texted to you instantly.
Recordings & transcripts
Every call recorded, transcribed and searchable.
Human handoff
Hot lead or tricky question? It transfers to you or your team live.
CRM / Google Sheets sync
Leads land where your team already works.
Outbound follow-ups
Reminder calls, no-show recovery and quote follow-ups.
Multilingual
Natural US English by default. Other languages on request.
Integrations
Plugs into the tools you already use.
Keep your number and your software. We connect your agent to them, so every call lands where your team already works.
Phone systems
- Your existing number
- RingCentral
- Dialpad
- Google Voice
- Grasshopper
- Twilio
Calendars & booking
- Google Calendar
- Outlook
- Calendly
- Cal.com
- Acuity Scheduling
- Square Appointments
CRMs
- HubSpot
- Salesforce
- GoHighLevel
- Pipedrive
- Zoho CRM
Field service
- Jobber
- Housecall Pro
Alerts & records
- Google Sheets
- Airtable
- Slack
Automation
- Zapier
- Make
- n8n
- Webhooks & APIs
Don't see yours? If it has an API or works with Zapier, we can connect it.
- Dental clinics
- Med spas
- Law firms
- Real estate
- Restaurants
- Home services
- 24/7
- Books appointments
- SMS lead alerts
- Natural US English
Compare
Receptionist vs voicemail vs Zerobell
Availability
- Receptionist
- Business hours
- Voicemail
- 24/7, but nobody answers
- Zerobell
- 24/7/365, live
Cost per month
- Receptionist
- ≈ $3,000+ salary (est.)
- Voicemail
- Free
- Zerobell
- From $299/mo
Missed calls
- Receptionist
- Breaks, busy lines, after hours
- Voicemail
- Most callers hang up
- Zerobell
- Answers every call, even several at once
Languages
- Receptionist
- Usually one
- Voicemail
- Your greeting only
- Zerobell
- English + more on request
Instant lead alerts
- Receptionist
- Sticky notes
- Voicemail
- No
- Zerobell
- Yes, by SMS
Sick days
- Receptionist
- Yes
- Voicemail
- n/a
- Zerobell
- Never
Salary figures are rough estimates for comparison only.
Pricing
Costs less than the calls you're missing.
Custom-built for your business. Priced around your call volume.
Plans from
Every agent is custom-built for your business, so we give you an exact quote after a quick demo.
Every plan starts with a 14-day pilot.
Every plan includes
- A custom AI voice agent, in the voice you choose
- 24/7 answering, even several calls at once
- Appointment booking into your calendar
- Text alerts, confirmations & follow-ups
- Call recordings & transcripts
- Live transfer to you for hot leads
Your business could be here.
We're a new agency and we're not going to pretend otherwise. Be one of our first pilot partners: we'll work closely with you, tune your agent personally, and your results become our first case study (with your permission).
- Pilot partner #1
- Pilot partner #2
- Pilot partner #3
- Pilot partner #4
FAQ
Questions, answered.
Still unsure? Ask our AI directly. It knows the answers too.
We recommend being upfront: the agent can introduce itself as your AI assistant. Most callers care far more that someone picked up and solved their problem. Disclosure rules vary by state, and we'll configure the greeting to fit yours.
It never guesses. It takes a detailed message, offers a callback, or transfers the call to you live, based on rules you set. You get a summary either way.
Yes. You keep your number and forward calls to the agent: all calls, after hours only, or only when you don't pick up.
Most agents go live within 7 to 10 days of our kickoff call, including testing. Integrations like a CRM can add a few days.
Recordings and transcripts are stored encrypted and only your team and ours can access them. We're happy to sign an NDA, and we never use your calls to train public models.
Yes. Your AI sends missed-call text-backs, booking confirmations and reminders from your business number, and texts you every new lead. We set up verified business texting for you so your messages get delivered, and we'll walk you through it on your demo call.
Plans start at $299/month. Every agent is custom-built, so we give you an exact quote after a 15-minute demo, and every plan starts with a 14-day pilot so you see real calls answered before you commit.
Yes. Google Calendar, Outlook, Calendly, HubSpot, GoHighLevel, Jobber, Google Sheets and more. If your software has an API or works with Zapier, we can connect it.
Every call answered. Starting today.
Prefer we call you?
Tell us about your business. A human replies, not a bot.