> ... but they would only accept mail or fax.
It's because the USPS (and FedEx, UPS, et al.) and fax are considered "secure" methods of transmission for confidential or private information (including PHI).
E-mail is not, because it travels over the public Internet.
As in terms of usage? No.
I still have to fax things to the government, and I have no idea why. For example, I had to fax an old tax return to California Franchise Tax Board, but they would only accept mail or fax.
And I never scan something and email it. Even banks went straight past email check deposits to smart phone photo check deposit. I put pictures on the web. I text things way more. I use Google Docs, Drive, DropBox, or the cloud for about everything else.