Phaxio
The facts below are what the maker publishes about Phaxio, checked and dated. Our editors have not written about it yet.
Plans and prices
From Phaxio's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Caller Name | $0.01, paid once | Sender information · Per Fax Rec'd |
| US & Canada faxing | $0.07, paid once | US & Canada · volume pricing shown for 50,000+ and 100,000+ pages per month · Per Page |
| International faxing | $0.10, paid once | International destinations · volume pricing shown for 50,000+ and 100,000+ pages per month · Per Page |
| Phone number | $2 a month | US & Canada only (for now) · Per Month |
The facts
Each one read from Phaxio's own pages, with the date it was checked.
What it does
- API formats
- The maker lists client libraries or examples for cURL, PHP, Node, Ruby, Java, Python, and .NET.checked 4 Oct 2026
- API limit
- The FAQ says accounts can make one API request per second and asks higher-volume users to contact support.checked 4 Oct 2026
- Callback retries
- If a callback URL is unreachable, Phaxio says it retries at increasing intervals through every six hours for three days, and callbacks can also be triggered manually from the web console.checked 4 Oct 2026
- Dashboard
- Phaxio's dashboard lets users manage faxes and provision phone numbers.checked 4 Oct 2026
- Document formats
- The FAQ lists DOCX, PDF, TIFF, JPG, TXT, HTML, and PNG as supported file types.checked 4 Oct 2026
- Fax reliability
- Features include batching and collision avoidance, cancel timeouts, no throttling, smart routing, and configurable retries.checked 4 Oct 2026
- HIPAA guidance
- The maker says HIPAA compliance requires steps including disabling document storage, enabling two-factor authentication, using HTTPS webhooks, and requesting a BAA.checked 4 Oct 2026
- Integrations
- Barcode data can be posted to an application, and outgoing faxes can include metadata such as order numbers, user IDs, or patient record numbers.checked 4 Oct 2026
- Product
- Phaxio provides an API for sending and receiving faxes through software applications.checked 4 Oct 2026
- Support
- The FAQ directs users with questions to [email protected].checked 4 Oct 2026
- Transport security
- Phaxio states that its API enforces TLS 1.2.checked 4 Oct 2026
The company
- Company
- The About page identifies Phaxio as built by Sinch and says it transmits over 26 million pages per month with 160 thousand active phone numbers.checked 4 Oct 2026
Money
- Trial access
- Phaxio offers a free API test key for staging with unlimited API calls.checked 4 Oct 2026
