I think our web mail system for our IMAP hosting is becoming one of the best in the industry. To make development faster, I asked entire R&D team not to use any mail software but our web mail. That seems to speed up the development speed.
ウチクラ ケンイチ 
bokushi 
SETSUKO 
カワシマヒロキ（ひーさん） 
Junya Suzuki 
Seattle Execs. 
Tetsuro Watanabe 
Lupin 
木曽町田中屋豆腐 
水琴晶子（みことあきこ） 
PSPCF