Faxing

Securely send and receive faxes at scale

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Transfer information with high levels of security

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Developer-friendly API for secure faxing

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Drive revenue with fax.

Cloud-based fax service provides your business with secure and reliable document tranfer via our feature-rich APIs (Application Programming Interface). Integrating our API into your workflow makes it easy for you to enable your customers to share medical records, legal documents, real estate contracts, and receive food orders, more confidently and securely — to keep your business running.

Flexible and Scalable

As businesses move away from servers and hardware, our leading API allows companies to realize greater value by leveraging software in the cloud.

Dependable Performance

Our consistent track record provides reliable deliverability and support you can count on.

Always Secure

Certifications achieved through independent audits enable us to support your security and privacy compliance needs including HIPAA, SOC 2, PCI and GDPR.

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Feel confident faxes are always reliably sent.

Fax reliability is critical in today’s information-driven businesses. Our fax API is designed and built to dependably meet all your faxing demands no matter your industry, business type, size or volume.


Quickly turn up fax service on phone numbers and send calls to us over our SIP network for fax processing. Your fax messages will be carried over our completely redundant network infrastructure, giving you trustworthy and total coverage in the U.S.

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Scale up your faxing with ease.

Our infrastructure is architected to handle high volumes and automatically scales to handle nearly infinite call paths. We have a number inventory of millions of local or toll-free numbers from which you can choose, or you can bring your own. Whether a constant stream of transmissions or sudden bursts, we can help you efficiently manage your daily faxing needs.


Reloyin on our API fax solution, be assured your online faxing is always dependable and highly secure, letting you quickly scale as day-to-day demands increase.

The proof is in our platform performance.

100%

Uptime reliability

100M

Monthly fax minutes transmitted

25M

Fax pages transmitted per month

99.9957%

Faxes delivered

Highlighted Features

A fully self-service fax solution designed for rapid development and high performance — backed by a team of experts.

Intuitive Web Portal White
Easy to Understand Fax Dashboards

Quickly see the send and receive time and status of your faxes

Don't Lose Your Number
Automatic Retries

Eliminate manual resends of failed faxes due to busy lines and other fax-related errors

Vendor Agnostic
Simple Administration

Create and manage users, groups, roles and permissions from our customer portal plus make porting requests in real-time

Cost Savings
Simple, Straight-Forward Pricing

Pay per page with no hidden charges, setup, or monthly fees — voume pricing available

Data Security
Rapid Activiation

Establish your account in minutes and begin sending faxes quickly

Multiple File Formats
Multiple File Formats

DOC, DOCX, PDF, TIF, JPG, ODT, TXT and PNG supported by app and API, plus URL or HTML file for fetching or rendering from API

Additional Features
  • Effortless number mangement with our vast inventory and easy porting
  • Our infrastructure is ISO 27001 certified and SAS 70 Type II audited
  • Both T.38 and G711 protocols supported
  • Support for multiple devices, mobile, desktop and ATAs
  • Send faxes to multiple recipients in a single API call
  • Change time zones on your outgoing fax header via API
  • Batch faxes together when sending to a single number and queue them appropriately
  • Set automatic cancel times or use the API to cancel in-flight faxes
  • Add tags to faxes and recall faxes by tags at a later date
  • Use our API to provide the transmission stage proactively using in-flight webhooks

Let's help you get started with the best faxing solution for your business.

  • Find the right faxing solution
  • Schedule a technical review
  • Learn about pricing plans
Talk to an expert