[randomerr]

Yes. We have our Exchange system setup that if we have 'SECURE' in the title it will check if we TLS agreement with the receiving server. If we do, we'll send the email through with encryption. If not, the receiver is required to sign-up for our secure web service and then use a one-time code to download the file.

We do limit the file size of what we'll send in encryption. But does someone really need a 3 gig PDF?

We really only keep fax for government requirements and the few outliers that will not cut the phone cord. We were getting some many junk faxes we had to implement a white-list.