A fax API and MCP server for AI agents to send and receive faxes with receipts
Stage
Startup
Not given
Founded
2025
2023
Based in
US
US
Pricing model
Freemium
Paid
Pricing
Free plan: $0/mo with 2,000 messages per month on WhatsApp, Telegram, Instagram and Messenger, $2 of SMS/voice/email credit, and AI agents. Pro: $20/mo with $20 monthly usage credit, unlimited channels, phone numbers from $0.63/mo, transactional email $0.40/1,000, marketing email $0.80/1,000, SMS fr
$0.039 per page sent, $0.019 per page received, $2 per fax number per month, $10 minimum wallet top-up, optional Agent workspace $19 per month, sandbox free. Prices as of 2026-10-28.
Key features
AI agents across channels
Voice agents with phone answering
Transactional and marketing email
OTP and verification codes
Phone number provisioning in 200+ countries
WhatsApp Business templates and media
Broadcast campaigns and scheduling
Shared inbox and contact management
Serverless functions on events
Agent memory and knowledge base
Document preparation with PDF, image and text rendering
Price quotes bound to document, destination and sender
Authorization by person or delegated policy
Bounded retries with circuit breaker per route
Private inbox for received faxes with signed URLs
Idempotent API calls with Idempotency-Key header
Signed webhooks with event IDs
Sandbox for free testing before production
Document retention with 30-day default and deletion option
What makes it different
Single API for 8+ messaging channels instead of multiple vendor integrations
Up to 92% lower costs than alternatives like Twilio and Resend
AI agents that set up infrastructure automatically
Five-minute onboarding from signup to first message
No platform markup on Meta WhatsApp pricing
Every fax send produces a receipt with provider evidence of delivery
Agents cannot exceed their own permissions or budget limits
International fax coverage to 213 destinations with transparent pricing
MCP server with 15 tools for seamless agent integration
Per-page pricing with no minimum subscription requirement
Zavu
Fax for Agents