I use FileShare that's included in my CCH SiteBuilder web site along with CCH's eSign that handles signatures as well as delivering a digital return copy. I had NO one come into my home office this year. Everyone, except for young kids with no digital footprint yet, was able to sign via eSign (now that NY finally accepts electronic signatures). For the kids who "failed" eSign, I uploaded signature pages to FileShare.
Talk to your Drake rep about what they might offer &/or what they've found that works best with Drake.
NAEA offers Verifyle free as a member benefit. Maybe NATP does also.
Most of my clients still want their physical "tax folders," so I mail them (actually, Hubby mails them for me) when I have time. Some of my elderly clients don't have access to a scanner, so they mail me their tax documents/information, or UPS/FedEx/etc. The best thing I did when I created my home office was install a large mail slot in my front door for local clients to drop off. Contactless; I let their envelopes set for three days in my entryway.