While email is certainly a more popular method of communication for business these days, there are reasons why some still prefer fax—traditional or virtual—for sharing critical files and information with clients and co-workers. Sometimes, it's because they're more comfortable and familiar with it. Other times, it's because faxing is part of their compliance processes. But the most important reason businesses still use fax is because it's considered more secure than email. This isn't to say that email isn't secure at all. But in general, fax networks are encrypted from the get-go while applying encryption to your email service can take a bit of effort. Unencrypted connections are more vulnerable to data hacking, corruption, and interception—not a good thing when you're exchanging confidential or sensitive information. In other words, until built-in encryption becomes a norm for emails, fax is definitely the safer option for sending and receiving private documents.