4 ms·What open standard? IMAP? There is no adequate mail open standard.by kenjackson 14y agoWhat open standard? IMAP? There is no adequate mail open standard.duskwuff 14y agoIMAP is quite adequate. It's imperfect, but it's open and it's extensible. The same can't be said of ActiveSync.X-Istence 14y agoIMAP, CalDav and CardDav.