Note: add materials related to American posting rules in Posting rules current cases are all English. Cite to Soldau v. Organon, Inc. 860 F.2d 355 (9th Cir.1988) the guy who retrieved letter before it was sent. Still liable.
Lead case is Adams v. Lindsell (although, this is British)
See RSC Section 40; 68
Mansfield v. Smith 88 Wis.2d 575, 277 N.W.2d 740 (1979)