Hard boundaries
Account, inbound, geography, and compliance.
These distinctions rule out more options than a small price difference does.
- Account
- Just One Fax: no login or dashboard. iFax: Required for the trial and subscription; the 7-day trial asks for payment details.
- Inbound
- Just One Fax: no receiving number. iFax: As of August 24, 2026, iFax listed Basic without receiving and Plus with receiving.
- International
- Just One Fax: U.S. destinations only. iFax: Domestic and international options are offered; one-time and plan pricing can depend on the destination.
- Compliance
- Just One Fax: no HIPAA claim or BAA. iFax: As of August 24, 2026, iFax labeled Plus, not Basic, as HIPAA compliant. Confirm the plan, BAA availability, and configuration directly with iFax.
Provider compliance statements are not a substitute for your own legal, security, procurement, and configuration review. Confirm the exact plan and obtain any required agreement before transmitting regulated information.