eFax vs Sinch Fax API
eFax
efax.comSinch Fax API
sinch.comSide by side
| Figure | eFax | Sinch Fax API |
|---|---|---|
| Price from | $18.99/mo | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · Fax APIs | 9.3 (#1) | 7.2 (#22) |
| Founded | 1999 | 2008 |
| Headquarters | Los Angeles, California, United States | Stockholm, Sweden |
| What it does | eFax sends, receives, stores and signs faxes through email, web portals, mobile devices and cloud services without a physical fax machine. | Sinch Fax API is a cloud-based service for securely sending and receiving faxes through an API. |
Plans
In their own words
Sinch Fax API
Sinch Fax API is a cloud service for sending and receiving faxes through a REST API. It supports delivery tracking and webhooks for incoming or completed faxes, with Basic or OAuth 2 authentication. If storage is enabled, fax logs and media remain available for 13 months before deletion. Listed formats include DOC, DOCX, PDF, TIF, JPG, TXT, PNG, URLs, and HTML. A customer portal shows fax status and send or receive times, and provides controls for users, groups, roles, and permissions. Sinch describes intelligent routing and automatic retries for failed transmissions, and says its U.S. fax-processing network has 99.999% uptime and redundant infrastructure. Customers can select local or toll-free numbers or bring their own; the infrastructure is described as scalable for high volumes. The service supports stated HIPAA, SOC 2, and GDPR compliance needs and secure transmission for healthcare data. A free Sinch Build Dashboard account is required to start, and signup includes a free virtual number for testing. Pay-as-you-go costs $0.05.