2822 => 'Internet message format (2001)',
5322 => 'Internet message format (2008)',
3501 => 'IMAP4rev1',
- 2177 => 'IMAP IDLE', # TODO
+ 2177 => 'IMAP IDLE',
# 5032 = 'WITHIN search extension for IMAP',
4978 => 'IMAP COMPRESS Extension',
# 5182 = 'IMAP Extension for Referencing the Last SEARCH Result',