%% You should probably cite rfc8579 instead of this I-D.
@techreport{ietf-extra-sieve-special-use-05,
    number =    {draft-ietf-extra-sieve-special-use-05},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-extra-sieve-special-use/05/},
    author =    {Stephan Bosch},
    title =     {{Sieve Email Filtering: Delivering to Special-Use Mailboxes}},
    pagetotal = 12,
    year =      2019,
    month =     jan,
    day =       24,
    abstract =  {The SPECIAL-USE capability of the IMAP protocol (RFC 6154) allows clients to identify special-use mailboxes, e.g., where draft or sent messages should be put. This simplifies client configuration. In contrast, the Sieve mail filtering language (RFC 5228) currently has no such capability. This memo defines a Sieve extension that fills this gap: it adds a test for checking whether a special-use attribute is assigned for a particular mailbox or any mailbox, and it adds the ability to file messages into a mailbox identified solely by a special-use attribute.},
}