AI Receptionist That Answers Calls & Texts 24/7
A natural-sounding voice receptionist and intelligent SMS assistant that books appointments, sends confirmations, handles FAQs, and speaks English and Spanish — so you never miss another customer.
500+
calls handled
24/7/365
availability
< 1 sec
pickup time
Your Phone Is Ringing. Nobody Is Answering.
Missed calls are the single biggest source of lost revenue for local businesses. The data is clear — and the cost is staggering.
37%
of business calls go unanswered
More than one-third of all calls to local businesses ring out or hit voicemail. Every unanswered call is a potential customer who moves on to a competitor.
82%
of missed calls happen during business hours
Your team is busy with in-person customers, on another line, or at lunch. The calls are not coming after hours — they are being missed while you are open.
24%
of callers leave a voicemail
Three out of four callers who reach voicemail hang up and call the next business on the list. If you are not answering, you are not even getting the chance to call back.
$10,540
lost revenue per month
At an average ticket value of $527, just 20 missed calls per month adds up to $10,540 in lost revenue. For many businesses, that is the difference between growth and stagnation.
Try It Yourself — Live Demo
This is a real AI receptionist handling calls and texts for a demo MedSpa. Call or text the number below and experience it firsthand.
Voice AI Demo
Call to speak with our AI receptionist:
(209) 921-5634Connected to a sample MedSpa. Ask about services, pricing, or book an appointment.
Try asking:
“What services do you offer?”
Try asking:
“How much is Botox?”
Try asking:
“Do you have availability this week?”
Try asking:
“I’d like to book an appointment”
SMS AI Demo
Text to chat with our SMS receptionist:
(209) 921-5634Same MedSpa demo. Ask about services, pricing, or request an appointment via text.
Try texting:
“What are your hours?”
Try texting:
“How much are dermal fillers?”
Try texting:
“Can I book for this Saturday?”
Try texting:
“Do you offer payment plans?”
What Sigma Voice AI Does
Two AI receptionists in one package — a voice agent that handles phone calls and an SMS agent that handles text messages. Both use your real business knowledge base.
Voice AI
Phone Receptionist
- Natural conversational voice — callers think they are speaking with a real person
- Answers service, pricing, and hours questions from your knowledge base
- Books appointments directly into your calendar system
- Transfers to a human team member when needed
- Multi-language support (English and Spanish)
- Call recordings and full transcripts
- California AB 2905 compliant — automatic AI disclosure
SMS AI
Text Receptionist
- Responds to inbound text messages about services and availability
- Sends appointment confirmations with date, time, and details
- Sends reminders before scheduled appointments
- Post-service review request via SMS to boost Google reviews
- TCPA compliant with proper opt-in and opt-out mechanisms
- Two-way conversational SMS — not just one-way blasts
How It Works
From the moment your phone rings or a text arrives to the post-service review request — Sigma Voice AI handles the entire customer lifecycle.
Customer Calls or Texts
Your AI receptionist answers instantly — no hold music, no voicemail, no missed calls. Inbound texts get an immediate, intelligent response. The customer experience starts the moment they reach out.
AI Uses Your Knowledge Base
The AI answers questions about your services, pricing, hours, and policies using your real business information. It checks your calendar for availability and books appointments on the spot.
Appointment Booked + SMS Sent
The appointment is saved directly to your calendar. The customer receives an SMS confirmation with the date, time, and any prep instructions. Your team gets notified in real time.
Follow-Up and Review Request
After the service is completed, the AI sends a follow-up SMS requesting a Google review. Your review count grows on autopilot, boosting local search rankings and social proof.
Save Up to $40,000+ Per Year
Compare the cost of Sigma Voice AI to traditional receptionist options. Same job, fraction of the cost, and it works around the clock.
Human Receptionist
$48,000/yr
9–5 only, PTO, benefits, sick days
Answering Service
$14,400–$28,800/yr
Per-minute billing, limited scope, no SMS
Smith.ai
$6,000–$24,000/yr
Per-call pricing, no SMS follow-up, no reviews
Sigma Voice AI
$7,188/yr
Unlimited calls (Pro), 24/7, SMS included, review automation
Feature Comparison
See how Sigma Voice AI stacks up against alternatives.
| Feature | Sigma Voice AI | Smith.ai | Ruby | Voicemail |
|---|---|---|---|---|
| 24/7 availability | ||||
| Natural voice AI | Human | |||
| SMS confirmations | ||||
| Appointment booking | Calendly only | |||
| Post-service review requests | ||||
| Bilingual (EN/ES) | ||||
| Appointment reminders | ||||
| Two-way SMS | ||||
| Per-minute billing | No | No | Yes | N/A |
| Starting price | $299/mo | $500/mo | $235/mo | Free |
Simple, Transparent Pricing
Voice AI and SMS receptionist packaged together. Every plan includes full onboarding, knowledge base setup, and calendar integration. No hidden fees. No long-term contracts.
Starter
$299/mo
Voice AI + SMS Confirmations
For single-location businesses that need a reliable AI receptionist to handle calls and texts during and after business hours.
- 500 minutes of AI call handling per month
- Business hours FAQ and service information
- Calendar integration and appointment booking
- SMS confirmations sent to customers
- Call recordings and transcripts
- Monthly usage reports
Pro
$599/mo
Voice AI + Full SMS Receptionist
For growing businesses that need unlimited call handling, full SMS receptionist, custom training, and complete lifecycle automation.
- Unlimited minutes — no call caps
- Full SMS receptionist (inbound + outbound)
- Custom knowledge base trained on your business
- Multi-language support (English + Spanish)
- CRM integration (GoHighLevel, HubSpot, etc.)
- Post-service review request SMS
- Appointment reminders (24h + 2h)
- Priority support and onboarding
- Advanced call analytics dashboard
- Custom call routing rules
Enterprise
$999–$2,500/mo
Voice AI + Full SMS + Custom Integrations
For multi-location operations, franchises, and businesses with complex workflows that need a fully customized AI employee.
- Multi-location support with location routing
- Custom integrations (EHR, PMS, CRM, POS)
- Dedicated account manager
- Advanced analytics and reporting
- White-label option available
- Custom voice and personality training
- SLA-backed uptime guarantee
- Quarterly strategy reviews
One-time setup fee: $1,500–$2,500 for custom knowledge base construction, calendar integration, phone number provisioning, and testing. Setup includes two weeks of refinement based on real call data.
Integrates With Your Existing Tools
Sigma Voice AI connects to the calendar, CRM, and communication platforms you already use.
Google Calendar
Calendly
Acuity Scheduling
GoHighLevel
HubSpot
Salesforce (via Zapier)
Cal.com
SignalWire
ElevenLabs
Built for Every Local Industry
Sigma Voice AI is trained to handle the specific language, services, and booking workflows of your industry.
MedSpa & Aesthetics
Answer questions about Botox, fillers, laser treatments. Book consultations and send pre-appointment instructions.
Example:
“How much is Botox per unit?” → AI answers with your pricing, checks availability, and books.
Dental Offices
Schedule cleanings, handle insurance questions, manage emergency routing. Reduce front-desk phone burden by 60%+.
Example:
“Do you accept Delta Dental?” → AI confirms insurance, offers next available cleaning slot.
Tire Shops & Auto Repair
Quote tire prices, schedule installations and oil changes, handle parts availability. Capture every call while your team is in the bay.
Example:
“How much for a set of 265/70R17 tires?” → AI pulls pricing, checks bay availability, books the install.
Plumbing
Triage emergency calls, schedule service appointments, answer common diagnostic questions. Route urgent requests to on-call plumbers.
Example:
“I have a burst pipe!” → AI flags as emergency, collects address, dispatches on-call tech immediately.
Electricians
Handle service calls for panel upgrades, outlet installs, and wiring issues. Qualify jobs with intake questions and schedule estimates.
Example:
“I need a 200-amp panel upgrade.” → AI asks about home age and current panel, schedules the estimate.
HVAC
Triage emergency heating and cooling calls, schedule seasonal tune-ups, answer warranty questions. Prioritize urgent comfort issues.
Example:
“My AC stopped working and it’s 105 degrees.” → AI escalates as emergency, books same-day service.
Legal & Law Firms
Qualify potential clients with intake questions, schedule consultations, provide practice area info without giving legal advice.
Example:
“I was in a car accident yesterday.” → AI runs intake, qualifies the case, books a free consultation.
Real Estate
Answer property inquiries, schedule showings, capture buyer/seller leads, and provide neighborhood information around the clock.
Example:
“Is the 3-bed on Elm Street still available?” → AI confirms listing status, schedules a showing.
Salons & Barbershops
Book haircuts, color appointments, grooming sessions. Handle stylist availability and send reminders to reduce no-shows.
Example:
“Can I get a balayage this Saturday?” → AI checks colorist availability, books the slot, texts confirmation.
Healthcare Clinics
Schedule patient appointments, answer insurance and hours questions, route urgent medical inquiries to on-call providers.
Example:
“I need a same-day appointment for my child.” → AI checks open slots, books, sends intake form via SMS.
Compliant & Trustworthy
Built with regulatory compliance and data security from day one.
California AB 2905
Full compliance with California’s AI disclosure law. Every call begins with a clear, natural AI disclosure so callers know they are speaking with an AI assistant.
TCPA Compliant
All SMS messaging follows TCPA regulations with proper opt-in and opt-out mechanisms. Customers can stop automated messages at any time with a simple reply.
HIPAA-Ready
For healthcare clients, Sigma Voice AI can be configured with HIPAA-compliant safeguards including encrypted call storage, BAA agreements, and PHI handling protocols.
Frequently Asked Questions
Everything business owners ask before deploying Sigma Voice AI.
What is Sigma Voice AI?
Sigma Voice AI is an AI-powered receptionist that handles both phone calls and text messages for your business 24/7. It answers calls with a natural conversational voice, responds to inbound texts, books appointments, sends SMS confirmations and reminders, and follows up after service with review requests. It is the first product under the Sigma Workforce AI brand.
How does the AI learn about my business?
During setup, we build a custom knowledge base for your business including services, pricing, FAQs, hours, policies, and staff information. The AI uses this to answer questions accurately and naturally. We refine it over the first two weeks based on real call and message data, and you can update it anytime.
Can it book real appointments?
Yes. Sigma Voice AI integrates directly with your calendar system — Google Calendar, Calendly, Acuity, GoHighLevel, or Cal.com. When a caller or texter wants to book, the AI checks real-time availability, offers open slots, confirms the appointment, and sends an SMS confirmation. The booking appears on your calendar immediately.
What if the AI cannot answer a question?
If the AI encounters a question outside its knowledge base or detects the caller needs human assistance, it offers to transfer the call. You configure escalation rules — always transfer for specific topics, VIP clients, or emergencies. If no team member is available, the AI takes a detailed message and sends it via SMS and email.
How does the SMS receptionist work?
The SMS receptionist uses the same knowledge base as the voice AI. When customers text your business number, the AI responds conversationally — answering questions about services, pricing, and availability. It can book appointments via text, send confirmations, deliver reminders before appointments, and send post-service review requests. All SMS is TCPA compliant with proper opt-in/opt-out.
Is it compliant with California AI disclosure laws?
Yes. Sigma Voice AI is fully compliant with California AB 2905, which requires disclosure when a caller interacts with AI. Every call begins with a clear, natural disclosure. We also comply with TCPA regulations for SMS, including proper opt-in and opt-out mechanisms for all automated messages.
How long does setup take?
Most businesses are live within 5 to 10 business days. Setup includes an onboarding call, knowledge base construction, calendar integration, phone number provisioning or porting, and testing. We run real-world scenarios before going live. Complex multi-location setups may take 2 to 3 weeks.
Can I keep my existing phone number?
Yes. We can port your existing business number to Sigma Voice AI, or set up call forwarding so your current number routes to the AI. We can also provision a new dedicated number if preferred. The process is handled during onboarding with zero downtime.
How does pricing compare to hiring a receptionist?
A full-time receptionist costs approximately $48,000 per year (salary, benefits, PTO) and only works 9-5. Traditional answering services run $1,200–$2,400 per month with per-minute billing and limited capabilities. Sigma Voice AI Pro at $599/month ($7,188/year) provides unlimited 24/7 coverage with SMS, appointment booking, and review automation — saving up to $40,000+ annually.
Can I try it before committing?
Yes. You can call our live demo right now at (209) 921-5634 to experience the AI receptionist handling calls for a sample MedSpa. You can also text the same number to try the SMS receptionist. Book a consultation to discuss a pilot for your specific business.
Ready to Never Miss a Call Again?
Every missed call is a missed customer. Sigma Voice AI answers every call and text, books every appointment, and follows up with every client — 24 hours a day, 7 days a week.
No commitment required. 30-minute setup call to see if Sigma Voice AI is right for your business.