Relay Solo vs Google Voice
Short answer
Google Voice gives you a second phone number for free (personal) or from US$10 a month with Google Workspace. Its acceptable use policy prohibits sending large numbers of commercial messages and messages sent by an automated process, so it is not built for AI replies or follow-up. Relay Solo is a business number built for texting car leads, with an AI that replies for you, for US$49 a month.
Side by side
| Relay Solo | Google Voice | |
|---|---|---|
| Price (USD) | US$49 or US$89 a month, plus a one-time US$29 registration | Free personal version; $10, $16 or $24 per user a month with Google Workspace |
| Built for business texting | Yes, registered with US carriers | The acceptable use policy prohibits large numbers of commercial messages and automated messages |
| AI replies to leads | Yes | No |
| Lead email intake | Yes | No |
| Appointment booking | Yes | No |
| Second number on your phone | Yes | Yes |
Where Google Voice is the better pick
- You only need a free second number for occasional personal texts and calls.
- Your company already pays for Google Workspace and wants everyone on it.
Where Relay Solo is the better pick
- You text leads every day, follow up, or want automated replies. Google's own policy says not to send messages via an automated process or bulk commercial messages.
- You want an AI that answers car shoppers and books appointments while you work.
Common questions
Can I use Google Voice for my car sales business?
For a few personal texts, many reps do. Google’s acceptable use policy prohibits sending large numbers of commercial messages and messages sent by an automated process, so it is not built for lead follow-up or AI replies.
Is Google Voice free?
The personal version is free. Google Voice for Google Workspace is listed at $10, $16 or $24 per user a month and needs a Workspace subscription.
Sources
- Google Voice Acceptable Use Policy (support.google.com) Read October 12, 2026.
- Google Voice for Google Workspace pricing (workspace.google.com) Read October 12, 2026.
- Relay Solo US pricing
Selling cars in Canada? Relay Solo for Canada has Canadian numbers and prices in CAD.