6 Best Online Fax Services for Small Businesses in 2025

Fax.Plus is a secure online fax service built for enterprises demanding high-level security and compliance measures. This works for healthcare, education, and banking industries, where strict data management is critical for transmitting confidential documents.

Built with multiple layers of protection, Fax.Plus incorporates data encryption, two-factor authentication, and fully encrypted fax archives. To ensure adherence to regulatory requirements, Fax.Plus has seven compliance offerings, all of which can be tracked through a compliance dashboard. Supported data privacy standards include the International Organization for Standardization (ISO) and Service Organization Control (SOC).

Users who need e-signed faxes must install the Sign.Plus app on their mobile devices before uploading the signature to their computer. If you’re looking for a hassle-free way to sign your faxes, Dropbox Fax has a built-in e-signature tool across all plans, including the free version.

• Fax header: Customize your fax header by adding the date, time, page count, and fax number of the sender or recipient. The timestamp is set based on the sender’s time zone.
• Fax cover sheets: The Fax.Plus website offers a selection of free fax cover sheet templates. For added customization, use the cover sheet generator or upload a shared cover sheet for the team.
• Analytics dashboard: Monitor the monthly fax consumption of the team or a specific member. The dashboard displays the number of faxes sent and received by each user based on billing cycles.

Customize the content of your fax cover sheet. (Source: Fax.Plus)

Dropbox Fax is one of my top online fax providers for anyone who sends and receives faxes regularly but not in high volumes. It has three scalable subscription options, ranging from $9.99 to $39.99 per month. Each plan supports a specific number of users, between five and 20 senders, allowing you to accommodate more users as your business grows.

Like Fax.Plus, Dropbox Fax offers a free online fax service. If you need additional free credits, you may complete the onboarding tasks on its website. It has built-in fax processing tools that let you add a signature, date, text, and checkboxes before sending a fax. Users can also send a high-resolution colored fax for image-heavy documents.

Dropbox Fax doesn’t have a mobile app to support remote fax users. In this case, consider Nextiva vFAX, which lets you use your tablet or smartphone to send and receive faxes. Access your fax documents in one intuitive mobile interface and set up SMS alerts for incoming and outgoing faxes.

• Third-party integrations: Dropbox Fax integrates with online storage platforms like Google Drive, Evernote, Dropbox, and One Drive for sending and retrieving faxes in the cloud.
• Electronic signature: Sign your faxes online without a scanner or printer. You can also add annotations, such as dates, checkboxes, or custom texts.
• Online fax number: Dropbox provides a fax number that works as a fax line, which you can use to receive faxes from physical fax machines or any online faxing service.

Send a fax through the recipient’s email address or fax number. (Source: Dropbox Fax)

eFax is the best fax service online for global operations, thanks to its ability to send and receive faxes from any country without extra charges or setup fees. Choose from international fax numbers in 49 countries to build a local presence overseas. If you have multiple office locations, eFax lets you secure up to 10 fax numbers for different areas.

There’s no long-distance fee when sending international faxes because faxing charges are based on send rates. For example, sending faxes to Australia will only cost you 10 cents per page (local), while a 40-cent fee applies if you send it via mobile.

eFax has limited options for fax cover sheets, which can be a drawback for industries requiring detailed cover page information to comply with regulatory standards. A better alternative would be Fax.Plus, which offers a wide range of cover page templates.

• eFax Messenger: Provides an enhanced desktop app interface, so you don’t need to access the fax portal from your browser. This lets you create, edit, and store faxes directly from your desktop.
• Searchable PDFs: Uses optical character recognition (OCR) technology to quickly retrieve stored faxes in PDF format. Simply enter a keyword, recipient’s name, or date to search through faxes.
• Electronic signature: Add an electronic signature or annotation to a fax before sending it. To sign a fax, simply swipe your finger on your mobile screen or upload your saved signature on the eFax app.

eFax offers an intuitive interface for sending faxes online. (Source: eFax)

iFax is an online fax service specifically for solopreneurs and small teams that only need to fax occasionally and want the flexibility of a pay-as-you-go model. It offers five outbound fax credits, including fax cover sheets, file attachments, and real-time updates.

The pay-per-fax service starts at $1.99 per page without setup fees or hidden costs. Once your faxing needs become frequent, you can switch to the base plan for only $14.99 monthly, which includes 200 pages.

Note that iFax exclusively offers all fax processing features in its highest-priced plan. Alternatively, you can check out Dropbox Fax, which offers all-inclusive access to faxing capabilities such as fax by email, e-signature, and cloud storage, even at the free plan.

• Optical character recognition (OCR): Converts the texts in a scanned document into computer-readable texts with editable fields. This feature works across various files, such as images, digital records, and handwritten notes.
• Fax automation: This feature automatically labels incoming and outgoing faxes and stores them in a preassigned folder. You can integrate iFax with your electronic health record software for a streamlined fax workflow.
• Fax notes: Add notes to your fax and allow team members to leave comments within the document. You can also set the status of a fax by labeling it as urgent, for review, or please reply.

iFax allows you to edit the text on a scanned file. (Source: iFax)

Nextiva, a well-known voice-over-internet protocol (VoIP) system, offers a standalone online fax service with a dedicated fax bridge. The Nextiva vFax is ideal for those who wish to keep their analog fax machines while leveraging the benefits of a virtual faxing solution. Purchasing the Nextiva fax bridge lets you connect your standard fax machine with your Nextiva account so you can fax to and from your email and fax machine.

In terms of value for money, Nextiva vFAX is the cheapest online fax service on this list, as it offers the most fax pages for a monthly fee of $9.95. You can upgrade to its full-featured small business package to access digital faxing alongside a suite of VoIP phone features.

Unfortunately, Nextiva vFAX is not designed for high-volume faxing because it only supports up to six recipients at a time. If your company needs fax broadcasting—for instance, when bulk-distributing marketing materials—check out eFax. You can transmit mass faxes and utilize advanced features like detailed reporting and automated scheduling.

• vFAX portal: Manage all your faxes in a secure portal through any browser-enabled device. Send and receive faxes, check the status or account activity, and retrieve backup information.
• Multidevice support: Send and receive faxes from any device, such as a fax machine, smartphone, tablet, or desktop computer. Faxes are delivered securely to your preferred inbox, which triggers SMS alerts when a new fax arrives.
• Secure transmission and storage: Nextiva uses 256-bit secure sockets layer (SSL) encryption for every fax sent and received to protect sensitive information. All faxes are stored in maximum-security data centers.

Manage faxes and profile settings from the Nextiva vFAX portal. (Source: Nextiva vFAX)

SRFax is a HIPAA-compliant fax service offering subscription plans dedicated to healthcare professionals. All healthcare plans are designed to meet HIPAA compliance specifications in adherence to patient privacy laws. It is also equipped with a Business Associate Agreement (BAA) to handle services involving personal health information. This guarantees the user that SRFax will appropriately safeguard patient data.

Standard packages are available for non-healthcare use. All plans include multiple recipients, a printer driver, and unlimited storage. I also like how it accommodates unlimited outbound users, as most competitors, like Fax.Plus, charge $99.99 for the same capability.

On the downside, its entry-level plan is priced higher than most providers on my list. At $11.45 for 200 fax pages, it’s more expensive compared to Fax.Plus, which has a similar plan for $8.99 and is also my top choice for the best free online fax service due to its generous fax credits.

• Never Busy Service: SRFax provides a single fax number for online faxing and the ability to transmit multiple faxes without a busy signal.
• Fax API: SRFax provides easy-to-use and feature-rich APIs to enable developers to incorporate e-fax capability into a platform. API assets are available for download.
• Junk fax filter: Prevent spam faxes by adding fax numbers to a list of blocked callers. All blocked faxes are placed into the “junk faxes” folder and stored for seven days.

SRFax provides configuration options when sending faxes. (Source: SRFax)