Most applications/listings say NO mail and NO calls. My portfolio is around 20mb, (at the smallest legible quality) so I share via a dropbox link. That being said, I have found most principals are unable to understand technology even at a basic level and clicking a link to download a single PDF is too complicated. For example, my first internship in 2003, was to print emails and handwrite voicemails for the owner as he didn’t understand all that technology. And that is a shame. UGH, you may be right.
I have written personal emails/cover letters to principals and individuals I have connections to, no one even responds.