You have three options:
1. Place document on fax machine, type in extension number, send. ... Get receipt.
2. Place document on scanner, type in email address, send. ... Phone to check they got document (and confirm that pea-soup pdf filename from scanner's pea-soup email address is not Wannacry18).
3. Place document on scanner, scan. Walk to PC, open email, write "here's attached docs you asked for", remember not to click send, browse to network, attempt to find correct document with pea-soup filename on today's random network folder, now send. Delete file on network drive so not everyone can read it.
Yes, I'd pick #1 any day of the week, or night of the weekend for that matter.