Is fax more secure than email?

Yes. Traditional fax travels over a dedicated phone line and never touches shared internet servers, making it immune to phishing and man-in-the-middle attacks. Modern online fax services like [mFax](https://mfax.to) add TLS encryption on top. Email, by contrast, passes through multiple servers and is the #1 vector for cyberattacks — 3.4 billion phishing emails are sent every day.

Why do hospitals still use fax instead of email?

HIPAA compliance is simpler via fax. Fax over a phone line is considered an addressable safeguard under HIPAA, while email requires end-to-end encryption, a BAA with the email provider, and rigorous access controls. About 70% of clinical communication in the US still happens via fax.

Are faxed documents legally binding?

Yes. Courts have accepted faxed signatures as legally binding since at least 1995. A fax transmission report provides a timestamped delivery record that regulators and courts recognize as proof of delivery. Email delivery receipts are optional and easily spoofed.

Can I send a fax from email?

Yes — online fax services let you send and receive faxes through your email inbox. With [mFax](https://mfax.to), you can also fax directly from your phone. See our guide to [faxing from email](/blog/how-to-fax-from-email/) for step-by-step instructions.

When should I use email instead of fax?

Email is better for casual communication, internal team messages, and any situation where you need to send links, embed images, or have a back-and-forth conversation. Use fax when you need legal proof of delivery, HIPAA compliance, or are sending documents to government agencies.

Fax vs. Email: When Fax Is Still the Better Choice

Email handles most communication — but fax still wins for security, compliance, and legal proof of delivery. Here's when to use each, and why millions of businesses still fax in 2026.

Frequently Asked Questions

Is fax more secure than email?: Yes. Traditional fax travels over a dedicated phone line and never touches shared internet servers, making it immune to phishing and man-in-the-middle attacks. Modern online fax services like [mFax](https://mfax.to) add TLS encryption on top. Email, by contrast, passes through multiple servers and is the #1 vector for cyberattacks — 3.4 billion phishing emails are sent every day.
Why do hospitals still use fax instead of email?: HIPAA compliance is simpler via fax. Fax over a phone line is considered an addressable safeguard under HIPAA, while email requires end-to-end encryption, a BAA with the email provider, and rigorous access controls. About 70% of clinical communication in the US still happens via fax.
Are faxed documents legally binding?: Yes. Courts have accepted faxed signatures as legally binding since at least 1995. A fax transmission report provides a timestamped delivery record that regulators and courts recognize as proof of delivery. Email delivery receipts are optional and easily spoofed.
Can I send a fax from email?: Yes — online fax services let you send and receive faxes through your email inbox. With [mFax](https://mfax.to), you can also fax directly from your phone. See our guide to [faxing from email](/blog/how-to-fax-from-email/) for step-by-step instructions.
When should I use email instead of fax?: Email is better for casual communication, internal team messages, and any situation where you need to send links, embed images, or have a back-and-forth conversation. Use fax when you need legal proof of delivery, HIPAA compliance, or are sending documents to government agencies.