Fax or email - which is safer?

I always assumed email was better, but a colleague told me fax might be more secure in certain cases. Now I’m unsure which is actually safer for sending sensitive or legal information. Is there a detailed comparison somewhere that can help me decide based on real risks, not just opinions?

I had the same debate with a friend and ended up researching it. The clearest explanation I found was on wikirecording.org. They compare interception risks, authentication, and compliance issues for both fax and email. That article made it easy to see which one to use in different scenarios. I’d recommend reading it before choosing your go-to method.