Here are three ways to email or send an online-only document to a fax number.

FaxZero: When You Need Fax Online Quickly

FaxZero is one of many free online fax services that send documents and a cover page to a fax number by filling out a simple form on their website. While FaxZero does offer free faxing services, there are restrictions. Free faxing is only available for faxes sent to locations within the United States or Canada, and you can only send five free faxes per day, with each fax containing a maximum of three pages, not including your cover page. FaxZero also offers paid faxing services: international faxing and a premium faxing service called Almost Free Fax. The fee per fax for international faxes varies depending on which country you’re faxing to, which is around $4 to most countries. The Almost Free Fax service is around $2 per fax and offers benefits such as a 25-page maximum per fax sent and the removal of FaxZero’s branding from the cover page.

How to Send a Fax With FaxZero

Here’s how to send a fax using FaxZero:

FaxFile: For When You Don’t Have Access to a Computer

If you don’t have access to a computer, but you do have access to the files you need to fax on your mobile device, then a faxing mobile app service may be the best option for you. Your document must be one of FaxZero’s approved/supported file types: Microsoft Word (DOC, DOCX, or RTF), PDF, PNG or JPG image files, Excel (XLS or XLSX), TXT, TIFF, GIF, Powerpoint (PPT) or HTML. FaxFile faxes documents and images directly from your smartphone or tablet. This app supports the faxing of PDF and Microsoft Word (DOC or DOCX) files and image files (PNG and JPG). While FaxFile is free to download, in-app purchases (called fax credits) are required to send faxes. Faxes sent to locations within the United States and Canada require the purchase and use of 10 credits per page, per recipient. Buy a pack of 50 credits for $3. FaxFile also offers international faxing, but check fax rates to make sure the company faxes to your intended country, and to see how many credits it will cost to do so—the prices vary greatly depending on the country you choose. Download For:

eFax: For When You Need to Email Faxes Often

Unlike FaxZero, eFax only offers its faxing services through a paid, monthly membership. However, what makes eFax particularly notable is that after you do sign up for a membership, it allows you to email to a fax number by just composing a regular email. Once you set up your eFax account, you’ll log into your email account and compose a new message as usual. You’ll still attach any documents or files as you normally would and your cover page will be whatever you type in the body of the email. Of the three services listed here, eFax allows for the widest variety of file formats to be sent. When you’re ready to send your fax, you’ll just type in your recipient’s fax number with the domain “@efaxsend.com” added to it. However, the price of membership with eFax is a bit hefty, especially if you don’t plan to fax frequently. It offers two membership levels: eFax Plus and eFax Pro. The Plus membership requires a $10 setup fee and a monthly fee of around $16. This membership allows you to send 170 pages for free per month, with additional pages costing $0.10 each. The Pro membership is around $25 per month with a $10 setup fee. The Pro membership allows 375 pages to be sent for free each month.