DOMAIN_YAHOO = "yahoo.com"
DOMAIN_SINA = "sina.com"

DOMAIN_163 = "163.com"

AOL_IMAP_SERVER = "imap.aol.com"
IMAP_SERVER_163 = "imap.163.com"
IMAP_SERVER_SINA = "imap.sina.com"
YAHOO_IMAP_SERVER = "imap.mail.yahoo.com"