toolgrep / Email & messaging / volai
Alternatives to volai
volai: Czech phone numbers, calls, SMS and a voice agent in one API. 8 products similar to volai, compared on pricing, free tier, API, MCP server, SDK and open source. 5 of 8 have a free tier, 8 of 8 have an API, 8 of 8 offer an MCP server.
- Hands for Agents
Physical-world engineering tasks for AI agents in the Czech Republic (EU)
- ThunderPhone
AI phone agents: build, test, and deploy production voice agents on one integrated stack
- PlaceCall
The real-world action layer for AI apps and agents
- Ausca
Pay-per-call APIs and MCP services for agents
- ErzyCall
Inbound, Outbound & WhatsApp AI
- Pingram
Messaging APIs for emails, SMS, voice, and WhatsApp
- Close CRM
Sales CRM with built-in calling, email, SMS, automation, and AI
- agentsvc.io
Pay-per-call API marketplace for AI agents with 127 services settled in USDC via x402
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| volai | Usage-based · from 0.50 CZK/min inbound calls; 0.92 CZK/min outbound calls; 1.36 CZK per SMS; 2.50 CZK/min voice agent surcharge; numbers from 25.00 CZK/month; monthly plan from 490 CZK | yes | yes | yes | no | no |
| Hands for Agents | Usage-based | no | yes | yes | no | no |
| ThunderPhone | Usage-based · from 2¢/min (Spark tier; Bolt 5¢/min, Storm 9¢/min; enterprise rates from 1¢/min) | — | yes | yes | — | no |
| PlaceCall | Usage-based | yes | yes | yes | yes | no |
| Ausca | Usage-based | — | yes | yes | yes | — |
| ErzyCall | Freemium · from $14.99/month (AI Receptionist, billed annually; $29.99/month monthly). Outbound minutes from $19 per 100 minutes. WhatsApp plans from $39/mo for 1,000 contacts. | yes | yes | yes | — | no |
| Pingram | Freemium · from $20/month | yes | yes | yes | yes | no |
| Close CRM | Freemium · from 9 | yes | yes | yes | — | no |
| agentsvc.io | Usage-based · from $0.002 per call | yes | yes | yes | no | — |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/volai/alternatives