Twilio Fax (Legacy) is a cloud‑based fax API that lets developers send and receive faxes programmatically. The following list provides 20 alternative fax‑service platforms that offer APIs, web portals, and integrations for businesses of all sizes.
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Enterprise‑grade fax service with API access, secure cloud storage, and compliance features (HIPAA, GDPR).
Integrated with RingCentral’s UCaaS suite; offers REST API, virtual numbers, and real‑time fax tracking.
Scalable fax API with global coverage, two‑factor authentication, and detailed delivery reports.
Business fax service with API, mobile apps, and unlimited inbound/outbound faxes on a dedicated number.
Cloud fax platform offering REST API, secure file encryption, and unlimited fax storage.
Global fax API with high‑volume pricing, TLS encryption, and support for PDF, TIFF, and DOC formats.
On‑premise and cloud fax solution with robust API, workflow automation, and enterprise security controls.
Mobile‑first fax service offering temporary fax numbers, API, and unlimited inbound faxes on the free tier.
Web‑based fax with API, e‑signature integration, and Google Drive/Dropbox connectivity.
Secure fax API with end‑to‑end encryption, compliance certifications, and real‑time status callbacks.
Consumer‑oriented fax service that also provides a REST API for developers, with cloud storage and OCR.
Affordable fax service with API, unlimited inbound faxes, and integration with popular CRMs.
US‑based fax service offering API, dedicated numbers, and detailed delivery receipts.
Free online fax service with API for low‑volume use, no hidden fees, and PDF/TIFF support.
Free web fax with optional paid upgrades; provides a simple HTTP API for sending faxes programmatically.
Full UC platform that includes a fax API, virtual fax numbers, and integration with Microsoft 365.
Secure, encrypted fax service with API, designed for regulated industries (healthcare, finance).
Enterprise fax solution with robust API, workflow automation, and compliance reporting.
Integrated fax service within Mitel’s communications suite; offers API, virtual numbers, and analytics.