eFax From $18.99/mo 9.3 Visit 
Phaxio
phaxio.com
Spec sheet
- Product
- Phaxio provides an API for sending and receiving faxes through software applications.Read 4 Oct 2026 · phaxio.com
- 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.Read 4 Oct 2026 · phaxio.com
- Support
- The FAQ directs users with questions to [email protected].Read 4 Oct 2026 · phaxio.com
- 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.Read 4 Oct 2026 · phaxio.com
- API formats
- The maker lists client libraries or examples for cURL, PHP, Node, Ruby, Java, Python, and .NET.Read 4 Oct 2026 · phaxio.com
- API limit
- The FAQ says accounts can make one API request per second and asks higher-volume users to contact support.Read 4 Oct 2026 · phaxio.com
- 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.Read 4 Oct 2026 · phaxio.com
- Dashboard
- Phaxio's dashboard lets users manage faxes and provision phone numbers.Read 4 Oct 2026 · phaxio.com
- Document formats
- The FAQ lists DOCX, PDF, TIFF, JPG, TXT, HTML, and PNG as supported file types.Read 4 Oct 2026 · phaxio.com
- Fax reliability
- Features include batching and collision avoidance, cancel timeouts, no throttling, smart routing, and configurable retries.Read 4 Oct 2026 · phaxio.com
- HIPAA guidance
- The maker says HIPAA compliance requires steps including disabling document storage, enabling two-factor authentication, using HTTPS webhooks, and requesting a BAA.Read 4 Oct 2026 · phaxio.com
- Transport security
- Phaxio states that its API enforces TLS 1.2.Read 4 Oct 2026 · phaxio.com
- Trial access
- Phaxio offers a free API test key for staging with unlimited API calls.Read 4 Oct 2026 · phaxio.com
Plans and prices
Caller Name $0.01, paid once Per Fax Rec'd Sender information Read 4 Oct 2026 · phaxio.com
US & Canada faxing $0.07, paid once Per Page US & Canada · volume pricing shown for 50,000+ and 100,000+ pages per month Read 4 Oct 2026 · phaxio.com
International faxing $0.10, paid once Per Page International destinations · volume pricing shown for 50,000+ and 100,000+ pages per month Read 4 Oct 2026 · phaxio.com
Phone number $2 a month Per Month US & Canada only (for now) Read 4 Oct 2026 · phaxio.com
Where Specifiction places it
- Fax APIs#19 of 267.6
- eFax Software#20 of 247.4
