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Head-to-head · Fax APIs

Sinch Fax API vs OpenText Core Fax Management API

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Sinch Fax API #4 in Fax APIs 9.0/10 Paid ✓ 4 of 4 features Visit Sinch
OpenText Core Fax Management API #5 in Fax APIs 8.9/10 Pricing on request ✓ 4 of 4 features Visit OpenText

Sinch Fax API leads on 0 checks, OpenText Core Fax Management API on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSinch Fax API · 9.0/10

Sinch Fax API scores higher on our rubric for fax apis: 9.0 against 8.9 out of 10; our editors rank them #4 and #5.

On api protocol, OpenText Core Fax Management API gives you Rest_and_soap where Sinch Fax API offers Rest.

Sinch Fax API is the better fit for businesses wanting a mature programmable fax service. OpenText Core Fax Management API is the better fit for enterprise teams needing governance and integrations.

  • Sinch Fax API fits best

    Businesses wanting a mature programmable fax service

  • OpenText Core Fax Management API fits best

    Enterprise teams needing governance and integrations

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Side by side

Feature Sinch Fax API 9.0/10 Visit ↗ OpenText Core Fax Management API 8.9/10 Visit ↗
At a glance
Editor score 9.0 8.9
Ranking #4 in Fax APIs #5 in Fax APIs
Best for Businesses wanting a mature programmable fax service Enterprise teams needing governance and integrations
Pricing model Paid Paid
Starting price — Pricing on request
Free plan — Not checked yet
Free trial — —
Deployment Cloud Cloud
Support Tickets, Docs Docs, Community
Compliance SOC 2, GDPR, HIPAA SOC 2, GDPR, HIPAA, PCI DSS, ISO 27001, SSO/SAML
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Sinch Fax API 4/4 · OpenText Core Fax Management API 4/4
Inbound faxing ✓ ✓
Outbound faxing ✓ ✓
Delivery tracking ✓ ✓
Webhook events ✓ ✓
Specs
API protocol Rest Rest_and_soap
Included pages Not checked yet Not checked yet
Our review
Pros
  • Supports both outbound transmission and inbound fax receipt
  • REST API returns JSON and supports webhook notifications
  • Tracks status and retries failed transmissions automatically
  • Supports inbound and outbound fax workflows with transmission tracking
  • Offers REST and SOAP APIs plus webhook event callbacks
  • Includes RBAC, SSO, SCIM, directory, audit, and monitoring tools
Cons
  • No free plan is available
  • The product is API-only rather than a standalone fax application
  • Pay-as-you-go pricing may require usage forecasting
  • Pricing uses a contact-sales model
  • Webhook behavior may require deployment-specific confirmation
  • The broad integration surface may demand enterprise integration planning
Our verdict

Sinch Fax API is a REST-based cloud service for developers building fax workflows into business applications. It supports sending outbound faxes, receiving inbound faxes, retrieving fax status, and tracking completion. Webhook…

Read the review →

OpenText Core Fax Management API provides programmatic management of enterprise fax operations through REST and SOAP APIs. It supports inbound and outbound fax workflows, fax status and transmission tracking, webhook callbacks for fax…

Read the review →
  1. Sinch Fax APIFax APIs 9.0Paid
  2. OpenText Core Fax Management APIFax APIs 8.9Pricing on request

Strengths and trade-offs

  • Sinch Fax API — where it wins

    • Supports both outbound transmission and inbound fax receipt
    • REST API returns JSON and supports webhook notifications
    • Tracks status and retries failed transmissions automatically

    Where it doesn't

    • No free plan is available
    • The product is API-only rather than a standalone fax application
    • Pay-as-you-go pricing may require usage forecasting

  • OpenText Core Fax Management API — where it wins

    • Supports inbound and outbound fax workflows with transmission tracking
    • Offers REST and SOAP APIs plus webhook event callbacks
    • Includes RBAC, SSO, SCIM, directory, audit, and monitoring tools

    Where it doesn't

    • Pricing uses a contact-sales model
    • Webhook behavior may require deployment-specific confirmation
    • The broad integration surface may demand enterprise integration planning
  • Sinch Fax API9.0/10 · Paid

    A mature REST fax API for adding inbound and outbound faxing to business applications.

    Visit SinchFull verdict →
  • OpenText Core Fax Management API8.9/10 · Pricing on request

    A mature REST and SOAP fax API suite for regulated, integration-heavy teams.

    Visit OpenTextFull verdict →

More comparisons

All fax APIs comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update