More calls answered. Less “spam likely”.
Build trust with Verified Phone Numbers
Discover  Feature
Verify your phone numbers with major U.S. carriers so your outbound calls look legitimate, avoid spam labels, and get answered more.
Overview

Trust the call  before it starts

Prevent spam flags
Verified numbers are authenticated by major carriers like T-Mobile, AT&T, and Verizon, making your calls less likely to be flagged as suspicious.
Build brand
Show customers a trusted business number instead of an unknown or questionable caller.
Feature

A better first impression  for every call

Streamline customer calls with Retell AI’s fast, context-rich, and personalized transfer options.

How It Works

Get Verified Numbers  in a few simple steps

Buy a phone number
Purchase a phone number in the Retell dashboard and open the Verified Phone Number add-on.
60 minutes free trial
Submit your
business profile
Add your company details and submit your verification request. Approval typically takes 1–2 weeks.
60 minutes free trial
Start calling
with confidence
Once approved, use your verified number for outbound campaigns with better trust and higher answer potential.
60 minutes free trial
Product Highlights

Built to Handle
the Real World

Truly Humanlike Experience
Natural turn-taking, low latency, and contextual language generation make every transfer feel effortless.
Multichannel Support
Use Retell across voice, SMS, and chat — all transfers work seamlessly across channels.
Warm Transfer Intelligence
Automatically summarize caller context before connecting, improving agent readiness.
Enterprise-Grade Reliability
No dropped handoffs, 99.9%+ uptime, and fallback systems ensure smooth transitions.
Use Cases

Proven Impact Across 

Industries

GiftHealth
Leveraging automation and AI, GiftHealth makes specialty medicine and procedures more accessible and affordable for patients while easing the administrative load on prescribers.
Our numbers show that 45-50% of calls are completely resolved by Retell AI without ever touching a human. We haven't even fully expanded it to all our lines yet.
Jonathan Adly
Senior Engineer, GiftHealth
Inbounds
Inbounds.com has scaled and optimized its call campaigns without sacrificing the human oversight essential to its customers' success.
“Our early adoption of Retell AI, combined with our ability to deeply customize it and build our own infrastructure around it, really gives us an edge in the industry.”
Leonardo Danconia
CEO and Cofounder, inbounds.com
Swtch Energy
The cost of our customer support team was increasing 300 to 400 percent a year. By introducing Retell and building Lucas, we were able to reduce that burden by over 50 percent, drastically improve our SaaS margins, and still support our customers during high-growth and urgent situations.
Carter Li
CEO
Integrations

Seamless

Integrations with Your
Tech Stack

View All Integrations
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
Learn More

Discover More
Features

Explore how Retell AI can transform every part of your call operations. See the full range of capabilities designed for smarter automation, better efficiency, and enhanced customer experience.

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