InterFAX vs OTG Networks vFax
InterFAX
uplandsoftware.comOTG Networks vFax
otg-group.comSide by side
| Figure | InterFAX | OTG Networks vFax |
|---|---|---|
| Price from | — | $15/mo |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Plans published | 2 | 4 |
| Spec score · Online Fax Services | 8.7 (#17) | 8.9 (#10) |
| Spec score · Online fax services | 8.5 (#26) | 9.0 (#6) |
| Compliance | The product page describes InterFAX as HIPAA-, PHIPA-, and PCI DSS-compliant and ISO 27001-accredited. | OTG describes vFax as HIPAA compliant and lists 256-bit encryption, full audit logs, and SOC 2 ready. |
| Compliance support | hipaa | hipaa |
| Free plan | No | No |
| Inbound faxing | Yes | Yes |
| Integrations | The product page lists integrations with Epic, Salesforce, and OncoEMR, and also names email providers. | OTG's features page lists Salesforce, HubSpot, Microsoft Teams, Zoho CRM, Slack, WhatsApp API, Google Workspace, and Active Directory in its ecosystem. |
| Mobile apps | No | Yes |
| Security | InterFAX describes TLS encryption for inbound and outbound faxes, private and public key signature authentication, and a delete fax after completion feature. | The vFax page says faxes are encrypted in transit and at rest, with role-based access controls and audit logs. |
| Support | InterFAX states it offers 24/7/365 customer support and local language support experts by phone in 58 countries. | OTG's About page lists support hours as Monday through Friday, 8 AM–8 PM EST, and Saturday, 10 AM–4 PM EST. |
Plans
InterFAX
- Monthly subscriptionPrice not published
- Prepaid pricing packagePrice not published
OTG Networks vFax
- Starter$15 a month
- Business$29 a month
- EnterprisePrice not published
- vFaxFree
In their own words
InterFAX
InterFAX is a hosted online fax service for sending and receiving faxes through web-connected applications, without installing software. Users can fax through email, the web interface, mobile devices, or scanning devices, and the service supports inbound and international faxing. Developers can add cloud fax to applications using REST or SOAP APIs. Listed integrations include Epic, Salesforce, OncoEMR, and email providers. Features include customizable headers and cover pages, granular permissions, delivery confirmations, retry settings, OCR, document workflows, activity reporting, and an audit trail. Bulk fax broadcasting supports up to 20,000 recipients. InterFAX describes TLS encryption, signature authentication, and an option to delete faxes after completion. It also describes HIPAA, PHIPA, and PCI DSS compliance, plus ISO 27001 accreditation. Pricing is available on request, and a 30-day trial is offered; there is no free plan. Prepaid faxing has no monthly minimums or fees, while receiving faxes requires a subscription with a monthly page allowance.
OTG Networks vFax
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.