email from netscape responding to my inquiry about buying a copy of netscape for mac (in 1996):
'Thank you for your interest in Netscape's software. If you would like the 128-bit encryption of the Navigator, it is available on diskette only. If you place your order through the General Store online (NOT the "Quick Purchase" program), you will receive the diskettes in the mail. Or you can call our Personal Sales Dept. to place your order by phone and we will mail the disks to you as well.'