InterFAX
InterFAX is a hosted online fax service for sending and receiving faxes through web-connected applications without installing software.
What InterFAX is
InterFAX is a hosted online fax service for sending and receiving faxes through web-connected applications without installing software. Users can fax through email, its web interface, mobile devices, or scanning devices, and the service supports inbound and international faxing. Developers can integrate faxing into applications with REST and SOAP APIs. Listed integrations include Epic, Salesforce, OncoEMR, and email providers. InterFAX supports HIPAA compliance and describes TLS encryption, signature authentication, and an option to delete faxes after completion. Its features also include customizable headers and cover pages, user permissions, delivery confirmations, automatic retries, document capture and OCR, and audit reporting. Bulk broadcasting supports up to 20,000 recipients. Pricing is available on request, with a 30-day trial; there is no free plan. Prepaid use has no monthly minimums or fees, while fax reception is subscription-based and includes a monthly page allowance.
Good
- Supports inbound and international faxing
- Offers REST and SOAP APIs
- Bulk broadcasts support up to 20,000 recipients
- Includes automated activity reporting and audit trails
- Provides 24/7/365 customer support
Watch out
- No free plan
- Pricing is available on request
- Mobile apps are listed as unavailable
Who it suits
InterFAX suits organizations that need to send and receive faxes online, including teams integrating faxing into their applications. It may also fit businesses with compliance, document workflow, or audit requirements.
Verdict
InterFAX combines hosted faxing with application integrations, document workflows, and audit features. Consider it if you need online faxing and its subscription or prepaid structure fits your fax volume.
Plans and prices
From InterFAX's own pricing page, checked 12 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Monthly subscription | — | fax reception is subscription-based and includes a monthly page allowance · Monthly subscription; choose a rate and adjust or cancel anytime. |
| Prepaid pricing package | — | send faxes without monthly minimums or fees · Prepaid; no monthly commitment. |
The facts
Each one read from InterFAX's own pages, with the date it was checked.
What it does
- API
- The developer API supports REST and SOAP for integrating cloud fax into applications.checked 12 Oct 2026
- Audit
- The overview datasheet lists automated activity reporting and a full audit trail of sent and received faxes.checked 12 Oct 2026
- Compliance
- The product page describes InterFAX as HIPAA-, PHIPA-, and PCI DSS-compliant and ISO 27001-accredited.checked 12 Oct 2026
- Compliance support
- hipaachecked 23 Sep 2026
- Developer testing
- The developer program offers free faxing to one designated number for testing integrations.checked 12 Oct 2026
- Document capture
- The overview datasheet lists automated data extraction and indexing, OCR, conversion, compression, and customizable document workflows.checked 12 Oct 2026
- Fax volume
- The overview datasheet says bulk fax broadcasting supports up to 20,000 recipients.checked 12 Oct 2026
- Inbound faxing
- Yeschecked 23 Sep 2026
- Integrations
- The product page lists integrations with Epic, Salesforce, and OncoEMR, and also names email providers.checked 12 Oct 2026
- Interface features
- InterFAX lists customizable fax headers and cover pages, granular user permissions, delivery confirmation policies, and automatic retry settings.checked 12 Oct 2026
- International faxing
- Yeschecked 23 Sep 2026
- Pricing model
- The datasheet says fax transmission is usage-based and charges apply only to successfully sent faxes, while fax reception is subscription-based with included monthly pages.checked 12 Oct 2026
- Product
- InterFAX is a hosted online fax service for sending and receiving faxes from web connected applications without installation.checked 12 Oct 2026
- Security
- InterFAX describes TLS encryption for inbound and outbound faxes, private and public key signature authentication, and a delete fax after completion feature.checked 12 Oct 2026
- Support
- InterFAX states it offers 24/7/365 customer support and local language support experts by phone in 58 countries.checked 12 Oct 2026
- Ways to fax
- Users can send and receive faxes through email, the native web interface, mobile devices, and scanning devices.checked 12 Oct 2026
The company
- Founded
- 1996checked 28 Sep 2026
- Headquarters
- Austin, Texas, United Stateschecked 28 Sep 2026
Money
- Free plan
- Nochecked 23 Sep 2026
- Free trial
- The official site advertises 30 days of free credits for a free trial.checked 12 Oct 2026
Where it runs
- Mobile apps
- Nochecked 23 Sep 2026
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