Send and receiving fax is old school. You might not see many fax machines these days, but they're still in operation in certain workplaces. Insurance companies, banks, and realtors all use fax machines to quickly and securely exchange important documents.

Nothing else has managed to beat the fax machine at its own game---not even email. How can you send a fax without a fax machine, though? Thanks to online email to fax services, all you need is a PC with an internet connection.

These online fax services are functional, and best of all, they're free to use. Let's run through them and see how to send a fax from an email.

1. GotFreeFax

GotFreeFax Main Website Sending Page

Using GotFreeFax is about as easy as it gets. Just enter your information as the sender, enter your recipient's information and fax number, and then either upload a PDF, DOC, or JPG file. You can also add text to your fax in the text box provided (with formatting).

The main service is restricted to U.S. and Canadian fax recipients, but if you click the "Send an International Fax" button at the top of the page, you're given the option to fax documents to various other countries.

No ads or watermarks are added to any free faxes you send. GotFreeFax is one of the few free services that allow this option. The only limitations are that your faxes can't be more than 3 pages, and you can only send 2 free faxes per day.

For casual users, this free fax service is a good option.

2. FaxZero

FaxZero Online Fax Service Sending Page

FaxZero is, as the name implies, a zero-cost solution to sending fax online. You type the sender and receiver information into the provided form, including the recipient's fax number. You can either attach a document, type a text message in the provided text box, or do both. The service supports DOC, DOCX, and PDF file formats for sending. It's one of the fastest and easiest ways to send what is effectively an email to a fax machine.

The free version of this online app will insert an ad onto the cover page, and you're only allowed a maximum of 3 pages, plus the cover page. With the ad, FaxZero might not be the best option for legal documents. You can send up to 5 free faxes a day, so it's a good option for most users.

For a $1.99 fee (payable by PayPal) you can send up to 25 pages per document without ads. Like GotFreeFax, clicking "Send an International Fax" at the top of the page allows you to send fax abroad via email.

3. eFax

eFax Online Fax Service Main Website Page

eFax claims to be the "number one online fax service" for millions of customers. It's got a strong claim to that title, with a professional website and service that any consumer would be happy to use.

If you came across the eFax website, you wouldn't think it offered a free service. It's hidden away, but it's there, although the downside is that its free service is only to receive faxes, not send them. To be able to send a fax through email, you'll need to register for a 30-day free trial.

This'll give you an allowance of 150 pages each of inbound and outbound fax pages. Additional pages will cost you $0.10 a page. You'll have to provide your credit card details and sign up for a post-trial subscription costing $16.95, which you can cancel before your trial ends without paying anything.

eFax claims to support up to 46 different countries for international faxes, so if you need to send faxes abroad, you can.

You're able to send a fax through the website, the eFax iOS or Android app, or you can send a fax by email. This is a perfect, inexpensive online fax service for anyone who doesn't own a fax machine and doesn't need to send or receive a high volume of faxes.

4. MyFax

MyFax Free Faxing Service Page

MyFax is an interesting service with a slightly different setup than the other email-to-fax free services mentioned here. The free service acts as an advertisement to encourage users to sign up for its premium service with no fax-send limits and a dedicated fax number. The free service is pretty good for users who need to send one or two faxes in an emergency.

You can only send two faxes in a 24-hour period with MyFax's free service. It isn't clear how many pages you can send per fax, or whether there will be an ad cover page, so it's probably safe to assume that there will be until you give it a test run.

You can only send to U.S. or Canadian fax numbers using this free service.

If you're just looking for a quick way to send an email to fax, just fill out the form, type your message and attach a document. Then click "Send Fax"---it doesn't get much easier than that.

5. FAX.PLUS

FaxPlus Online Faxing Service Website Splash Page

There's not just one "number one rated fax service" here---there's two! The second so-called top service is from FAX.PLUS, a rather professional looking outfit which claims to have corporate users ranging from Uber to Harvard University.

It's clear that this service is targeting commercial users first, but it's the free service we're interested in. You get 10 free pages to send, with additional pages costing you $0.20 per page. The free service is solely for sending faxes via their website or using their email to fax service, and you aren't able to receive faxes without upgrading.

Special mentions do go to their more advanced, premium packages. How many online fax services include slack integration, electronic signatures, and unlimited cloud storage? You can get some, or all, of these features from $4.99 to $49.99 a month.

You can send a wider range of documents using FAX.PLUS, including DOCX, XLSX, PDF, and various image file formats. You're able to send to international fax numbers but FAX.PLUS may use more of your page allowance, depending on the destination. To send a fax, just type in the fax number, attach your document, add a message, and then click send.

One word of warning, however---you will need to verify your account by providing your cell number first before you can use the service.

Send Free Faxes Online by Email With Ease

Fax machines might be rare these days, but if you need to send important faxes on occasion, these online fax services can help you do it without hunting down some old-school tech. You're only limited by page numbers, destination countries, and how often you want to send faxes during a 24-hour or monthly period. You might also have to accept watermarks or ads on any documents you send.

But do explore better (and faster) options like cloud printing and cloud sharing too.

You're not limited to these free fax services, though. If you'd prefer, you can send faxes using your Android smartphone for free. These are great in a pinch. By the way, you can also send email to any cell phone for free.

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