Choosing an Online Fax Service
Dozens of online fax services compete for your attention, each with different pricing models, feature sets, and restrictions. Some require monthly subscriptions. Others demand account creation before you can send a single page. Many advertise "free" tiers that come with heavy limitations or ads stamped on your cover sheet.
If you just need to send a fax quickly, reliably, and without ongoing commitments, the differences between services matter. This comparison breaks down how UnoFax stacks up against four well-known alternatives: eFax, MyFax, FaxZero, and HelloFax.
Comparison Table
| Feature | UnoFax | eFax | MyFax | FaxZero | HelloFax |
|---|---|---|---|---|---|
| Pricing | $0.29 AUD/page flat | From $18.99/mo | From $10.00/mo | Free (limited) or $2.09/fax | Free tier (5 pages) then plans from $9.99/mo |
| Account Required | No | Yes | Yes | No | Yes |
| Countries | 45+ | 200+ | 40+ | US & Canada (free); 200+ (paid) | 70+ |
| File Formats | PDF, Word, Excel, PNG, JPG, TIFF, and more | 170+ formats | PDF, Word, and more | PDF, Word, JPG | PDF, Word, PNG, JPG |
| Cover Sheet | Multilingual, customizable | Customizable with logo | Basic template | Ads on free tier | Basic template |
| Scheduling | Yes | Yes | Yes | No | No |
No Account Required
Most online fax services require you to create an account, verify your email, and sometimes enter payment details before you can send anything. eFax, MyFax, and HelloFax all follow this pattern: you're signing up for a service relationship before you've sent a single page.
UnoFax and FaxZero both let you send without an account. But FaxZero's free tier is limited to the US and Canada with ads on the cover sheet, and caps you at a handful of pages per fax. Its paid international option costs $3.63 per fax. UnoFax has none of these restrictions: you upload your document, enter the destination number, pay for the pages you're sending, and you're done. No sign-up, no password to remember, no subscription to cancel later.
Transparent, Pay-Per-Page Pricing
Subscription pricing is the norm in online fax. eFax starts at $18.99 per month. MyFax charges from $10.00 per month. HelloFax offers a limited free tier but pushes you toward monthly plans. These subscriptions often include a page allowance, with overage charges for anything beyond it, and they continue billing until you explicitly cancel.
UnoFax charges a flat $0.29 AUD per page to any of our supported destinations. That's it. No monthly fee, no minimum commitment, no overage surprises. If you send five pages to Japan, you pay for five pages. If you don't send a fax for six months, you pay nothing. For infrequent senders or one-time needs, pay-per-page pricing is dramatically more cost-effective than any subscription.
International Coverage
If you need to send a fax outside the US, your options vary. FaxZero's free tier is US and Canada only, though paid faxes reach 200+ countries at $3.63 each. HelloFax supports 70+ countries. MyFax supports around 40 countries but at varying rates that aren't always transparent upfront.
UnoFax supports 45+ countries at the same flat rate per page. Whether you're faxing to the United States, Japan, Germany, or Australia, the price is the same. eFax technically covers 200+ countries, but its per-page international rates on top of the monthly subscription can add up quickly.
File Format Support
Every service handles PDF and Word documents. Beyond that, support varies. eFax leads with 170+ supported file formats. UnoFax accepts a wide range including PDF, Word, Excel, PNG, JPG, TIFF, and more. See our full file formats guide. If you have a Word document that needs converting first, we also offer a built-in Word-to-PDF converter. FaxZero and HelloFax cover fewer formats, which matters when you're working with scanned images or spreadsheets.
Cover Sheets and Scheduling
A professional fax cover sheet helps your document reach the right person. UnoFax lets you generate a customizable cover sheet, and uniquely offers multilingual cover sheets for international recipients. eFax offers customizable cover sheets with logo support. Other competitors provide more basic templates. FaxZero's free tier prints ads on the cover sheet, which is not ideal for professional use.
Need to send a fax during the recipient's business hours in another time zone? UnoFax supports fax scheduling, so your document arrives at the right time. eFax and MyFax also offer scheduling, but it is tied to their subscription plans. FaxZero and HelloFax do not offer scheduling.
Security and Privacy
Fax is inherently more secure than email for document delivery. There's no forwarding, no intermediary servers storing copies, and delivery is point-to-point. UnoFax adds modern encryption for the upload and transmission stages. Because we don't require an account, we also collect less personal data than services that store your name, email, fax history, and payment details indefinitely. Learn more on our security page.
The Bottom Line
If you send faxes regularly and need a dedicated fax number for receiving, a subscription service like eFax or MyFax may suit your workflow. But if you need to send a fax, whether it's a one-time legal filing, a prescription to an overseas pharmacy, or a contract to an international partner, UnoFax offers the most straightforward path: no account, no subscription, transparent per-page pricing, broad international coverage, and multilingual cover sheets that most competitors lack.
Send a fax now and see the difference, or learn more about UnoFax.