Concord Fax API vs Sinch Fax API
Concord Fax API
developer.concordfax.comSinch Fax API
sinch.comSide by side
| Figure | Concord Fax API | Sinch Fax API |
|---|---|---|
| Price from | — | — |
| Free plan | — | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Fax APIs | 8.2 (#8) | 7.2 (#22) |
| Founded | 1996 | 2008 |
| Headquarters | Seattle, Washington, USA | Stockholm, Sweden |
| Intended users | Concord describes its cloud fax and document exchange offerings as tailored to healthcare organizations and their document workflows. | Sinch describes the API for startups and established companies, with examples spanning healthcare, legal, finance, insurance, and real estate. |
| Security | Concord states that fax communications are encrypted in transit over TLS or Secure HTTP and lists encryption at rest and AES 256-bit encryption. | Sinch says the service supports HIPAA, SOC 2, and GDPR compliance needs, and describes advanced encryption and secure transmission methods for healthcare data. |
| Support | The Developer Portal offers support, and its login page lists Concord Support by phone at +1 (206) 441.3346 option 2 and by email at [email protected]. | Sinch offers product contact through its sales team and developer documentation, and the API reference directs users with questions to the support portal. |
Plans
In their own words
Concord Fax API
Concord Fax API has no write-up on Specifiction yet; its figures are above.
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.