Where AI voice agents earn their keep
- After-hours and overflow calls. Calls that would have gone to voicemail get answered, qualified and booked.
- Instant callback to web and ad leads. A form fill triggers a call within a minute, while the lead still remembers you. See speed to lead.
- Appointment confirmations and rescheduling for clinics, dental offices and salons.
- Re-engaging old leads who opted in but went quiet, with a short, specific reason to talk.
What a good AI voice agent does
Envoy's voice channel is powered by Dialgen, Revaik's AI voice platform, built for sub-second response times. Agents use a prompt and a knowledge base, can book appointments and call your APIs, and transfer to a human on request. Every call produces a transcript and a post-call summary written into the lead, so your team sees what was said without listening back. Outbound campaigns take a CSV audience and support scheduling, concurrency limits, quiet hours and retries on busy or no-answer. You can bring your own SIP trunk and numbers.
The TCPA in plain English
The Telephone Consumer Protection Act restricts calls made with an artificial or prerecorded voice and calls made with autodialers. In a February 2024 declaratory ruling, the FCC confirmed that AI-generated voices are "artificial" voices under the TCPA. In practice:
- Outbound AI-voice calls to mobile numbers need the recipient's prior express consent, and telemarketing calls need prior express written consent.
- Calls must identify the business, and telemarketing calls must offer an opt-out. Honor do-not-call requests and the National Do Not Call Registry.
- Several states have their own "mini-TCPA" laws with stricter rules, such as Florida and Oklahoma.
- Call recording needs all-party consent in some states, including California. Envoy supports optional recording with a disclosure.
- Inbound calls, where the customer calls you, are a much lower-risk place to start.
A safe rollout plan
- Turn on the AI agent for after-hours inbound calls only. Review transcripts for two weeks.
- Extend to overflow during business hours, with a transfer number for anything urgent.
- Add instant callbacks for web and ad leads whose forms include clear consent to be called, including by automated or AI voice.
- Only then run outbound campaigns, with quiet hours in the recipient's time zone, retry limits and opt-out handling.
Voice plus chat beats voice alone
US customers also text, DM on Instagram and Messenger, and use website chat. Envoy puts calls, chats and Meta Lead Ads into one lead pipeline, so a caller who later messages on Instagram is the same lead, with the same history. Pricing starts free; voice minutes are a paid add-on. See pricing and Envoy in the USA.