%% You should probably cite draft-ietf-extra-imap-savedate instead of this I-D.
@techreport{bosch-imap-savedate-00,
    number =    {draft-bosch-imap-savedate-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-bosch-imap-savedate/00/},
    author =    {Stephan Bosch},
    title =     {{Internet Message Access Protocol (IMAP) - SAVEDATE Extension}},
    pagetotal = 6,
    year =      2017,
    month =     sep,
    day =       15,
    abstract =  {This document adds a new capability called "SAVEDATE" to the Internet Message Access Protocol (IMAP). It defines a new IMAP message attribute called 'save date' that, unlike the existing 'internal date' attribute, always indicates the moment at which the message was saved in its current mailbox. The SAVEDATE capability extends the FETCH command with the means to retrieve the save date attribute and it extends the SEARCH command to allow using that attribute in searching criteria.},
}