This is the closest head-to-head in our comparison set. Both products were designed specifically for HIPAA-compliant cloud fax. Both deliver a signed Business Associate Agreement on the entry healthcare tier. Both publish credible security postures. Both price in a band that respects the operational realities of a solo practice or small clinic. A buyer who tries to choose between them on compliance alone will not find a decisive difference — the choice resolves on workflow shape and geographic footprint.

iFax leads on workflow polish. The iOS and Android apps are objectively the strongest in the category, with consistent 4.6+ user ratings, a built-in document scanner that handles real-world intake well, OCR for inbound document classification, and native eSignature integrated into the same flow as fax send and receive. For a practice manager whose staff handle referrals from a phone between patient rooms, iFax does not require behaviour change — the workflow works the way phones work.

SRFax leads on regional fit and on encryption posture. The product was built in Canada around Ontario PHIPA. Every plan ships free PGP encryption — meaningful for practices that want end-to-end key control rather than vendor-managed encryption. The audit-log export is comprehensive. The desktop-first interface suits practices where fax is dispatched from a workstation in the records room rather than from a mobile device.

The practical question is what shape your workflow takes and where your patients live. A solo psychotherapist working from a phone between sessions wants iFax. A two-doctor family-practice in Hamilton, Ontario wants SRFax. A US clinic with established desktop workflows could go either way, and the choice will hinge on whether mobile polish or PGP encryption matters more.