Best Online Fax Software (2026): Top 8 Compared

eFax is the best-known brand of Consensus Cloud Solutions, a Nasdaq-listed company that describes eFax in its 2025 annual report as established more than twenty-five years ago. Consensus also owns MyFax, Sfax, MetroFax and SRFax, so several services that appear separate in search results share a parent.

The product is sold in three tiers. The individual plan covers 200 pages a month within the US and Canada for one user and one number. eFax Business starts at 500 pages a month, reaches 51 countries, includes five user licences and offers a Business Associate Agreement, with extra users and lines sold monthly. eFax Corporate is quoted for each customer and adds a full admin portal, dedicated account management and the full eFax API.

All plans include email-to-fax, online storage with searchable faxes, electronic signatures, sending to multiple recipients, a desktop app and iOS and Android apps. For healthcare, eFax describes interoperability features that combine cloud fax with Direct Secure Messaging, EHR integration and eFax Clarity, which converts unstructured fax content into structured data. Consensus states that eFax Corporate is HITRUST CSF certified, and its annual report describes a separate FedRAMP-authorised product, ECFax, for public sector customers.

RingCentral is a cloud communications company best known for RingEX, its business phone, messaging and video platform. Online fax is available in two ways: as a fax-only package, Fax 3000, or built into RingEX plans such as RingCentral Advanced, which RingCentral lists with unlimited internet fax.

Fax 3000 includes 3,000 pages per user per month, the largest published allowance among the services compared here, and charges 4.9 cents per additional page. Users send and receive faxes from Mac, Windows, web, iOS and Android apps or by email, and can keep existing numbers or add local, toll-free or vanity numbers. RingCentral lists fax numbers in more than 105 countries.

Other listed features include receiving several faxes at once without busy signals, alerts by SMS and email, fax scheduling, custom cover pages, attachments from Box, Dropbox, Google Drive and Outlook, and sending to up to 50 recipients at a time. RingCentral states that the service supports HIPAA and FINRA compliance.

The comparison table on the fax page marks fax integrations and APIs, such as connections to Outlook, Chrome and Salesforce, as unavailable on Fax 3000 and included on RingCentral Advanced. Buyers that need fax inside other applications should price the bundled plan.

iFax is an online fax service sold to individuals, small businesses and larger organisations, with a separate programme for resellers, software vendors and communications providers. The company states that 5 million people across 20,000 companies use it, which is a vendor claim.

Plans are priced by page volume. Basic covers 200 pages a month and only sends faxes. Plus adds a fax number, receiving, HIPAA compliance and apps for iOS, Android, Windows and Mac. Enterprise customers negotiate commitment-based discounts and receive a dedicated account manager. The pricing page also has tabs for fax broadcast and API pricing, and recommends at least two fax lines for higher page allowances.

The product list covers HIPAA-compliant sending, email-to-fax, one-time faxes, fax broadcast, number porting, a shared team inbox, a company fax page, fax OCR, annotation and e-signing, and fax automation features. iFax lists integrations with Microsoft 365, Google Workspace, Gmail, HubSpot, Google Drive, Dropbox, OneDrive and Zapier, plus a programmable fax API and EHR fax integration for healthcare. Support is offered by email and chat around the clock.

Fax.Plus is an online fax service that sits alongside an e-signature product, Sign.Plus, and other document tools under the same company. It serves individuals, small businesses and enterprises through web, desktop, Android and iOS apps.

The four plans scale by pages, members and overage rate. Basic covers 200 pages a month for one member and one number, Premium 500 pages, Business 1,000 pages with five members and several numbers, and Enterprise 4,000 pages with unlimited members. Each tier also caps the length of a single fax, from 60 pages on Basic to 250 on Enterprise. Enterprise plans include two dedicated numbers, with more at $4.99 a month each. Every plan lists a 30-day free period for Sign.Plus.

Features include email-to-fax, print-to-fax, local and toll-free numbers, fax broadcasting, cover sheets, a programmable fax API, and integrations with Google, Microsoft, Slack and Zapier. Enterprise adds team setup, an admin console and number management. Fax.Plus describes AI-powered text and data extraction, AI faxing through the Model Context Protocol, a HIPAA fax offering and a choice of where data is stored.

Documo presents itself as a healthcare document platform built on cloud fax. Its pricing page groups products into three layers: the Foundation, which is cloud fax plus Direct Secure Messaging; the Intelligence, which is intelligent document processing; and the Connection, which is EHR and other integrations.

The three cloud fax plans are priced by volume, users and numbers. Solo is for individuals and small practices. Business adds team collaboration and developer APIs. Enterprise adds single sign-on and enterprise controls for high-volume users. Documo states that HIPAA compliance comes standard with every plan. The custom Platform tier combines fax with AI document classification and extraction, AI-enabled workspaces, EHR integrations, unlimited users and numbers, and dedicated account management.

Documo describes example workflows for referral management, prior authorisation and patient intake, and publishes case studies from healthcare customers. It also runs programmes for integrators, resellers, UCaaS providers and managed service providers that build fax into their own products. Organisations outside healthcare can use the same cloud fax plans, but most of the product's documented workflow features are aimed at clinical document handling.

WestFax is a cloud fax provider focused on healthcare and other regulated organisations. Its pricing page states that every plan is HIPAA compliant and comes with a signed Business Associate Agreement, which removes a step that several competitors reserve for higher tiers.

Plans are billed monthly with no contract. Solo is for individuals and solo practitioners, with one licence and one number. Team adds multiple fax lines, user and role management and optional integration and Comprehend add-ons, in two tiers of 1,500 or 3,000 pages. Enterprise offers custom per-page rates, unlimited users without per-user pricing, net-30 billing, the WestFax API, EHR and multifunction printer integration, AI data extraction workflows and a dedicated account manager.

Included pages count both sent and received faxes, are an allowance rather than a cap, and do not roll over. WestFax lists send and receive, fax-to-email and email-to-fax, a secure web portal called Fax Console, and iPhone and Android apps on all plans, with international faxing as an add-on. The page cites a Forbes Advisor ranking and G2 ratings, which are third-party claims reported by the vendor.

MyFax is an internet fax service owned by Consensus Cloud Solutions, the parent of eFax and Sfax. Consensus lists MyFax among both its corporate fax brands and its small office and home office brands in its 2025 annual report.

The service is aimed at people and small businesses that need a fax number without a machine or phone line. Faxes arrive in the user's email inbox, and users send from email, the web or the MyFax mobile app. MyFax states that no special hardware or software is needed.

All three plans include the same features. The difference is the number of pages included each month, and MyFax counts sent and received pages separately, so the Home Office plan includes 100 of each rather than 100 in total. Additional pages sent within the US cost 10 cents, with separate international rates. Buyers can pay monthly or take a discounted annual plan, start with a 14-day free trial, and cancel online. The pricing page describes faxes delivered to email as more private than a shared office machine but does not set out HIPAA or BAA terms, so regulated buyers should ask before signing up or consider the Consensus brands that document them.

Sfax is a secure cloud fax service built for healthcare. Its support centre is published by Consensus Cloud Solutions, and Consensus names Sfax among its corporate and small office fax brands in its 2025 annual report, so Sfax shares a parent with eFax and MyFax.

The service is priced by page volume rather than by user. Sfax states that one account can cover multiple organisations, sub-organisations and locations, each with its own fax numbers, and that it does not limit the number of users. Every plan includes a toll-free number, one year of storage and custom cover pages. Plus adds a BAA, and Contender adds a download service and API access. Enterprise covers 2,500 pages or more with custom overage rates, and Sfax says it can tailor plans or sell page credits for locations that are scaling up.

The sign-up page shows two sets of prices at the time of checking, so buyers should confirm the rate at checkout. All plans are described as HIPAA compliant, include a 14-day free trial and carry no long-term contract. Sfax publishes API getting-started guides and code samples in its help centre.