Openfax Cloud Fax API vs OTG Networks vFax

Openfax Cloud Fax API has no write-up on Specifiction yet; its figures are above.

OTG Networks vFax lets users send and receive faxes through email, a browser, or a device without fax hardware. To fax from email, users attach a PDF and enter the fax number in the recipient field; incoming faxes arrive as PDF attachments in the inbox. The web portal supports drag-and-drop documents, fax history, and management of multiple fax numbers. Customers can obtain a dedicated local or toll-free number or port an existing number. Delivery receipts report a timestamp, pages delivered, and recipient confirmation. The service is listed for Android, iOS, macOS, web, and Windows. OTG describes vFax as HIPAA compliant and says it uses encryption in transit and at rest, role-based access controls, and audit logs; it also lists 256-bit encryption and SOC 2 readiness. The page advertises unlimited cloud storage. The vFax plan is included free on every GoOTG plan, while the general pricing note starts at $15/user/mo. OTG identifies healthcare, legal, finance and banking, and real estate as industries that rely on vFax.