FLAG_DELETED     0x0001
FLAG_DRAFT       0x0002
FLAG_SEEN        0x0004
FLAG_RECENT      0x0008
FLAG_FLAGGED     0x0010
FLAG_ANSWERED    0x0020
FLAG_SAVED       0x0040
FLAG_MDNSENT     0x0080
FLAG_STTPENDING  0x0100
FLAG_FAVOURITE   0x0200
FLAG_NOTIFY      0x0400
FLAG_STTPRESENT  0x0800
FLAG_STTCOMPLETE 0x1000