%% You should probably cite rfc9219 instead of this I-D.
@techreport{ietf-jmap-smime-12,
    number =    {draft-ietf-jmap-smime-12},
    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-jmap-smime/12/},
    author =    {Alexey Melnikov},
    title =     {{S/MIME Signature Verification Extension to the JSON Meta Application Protocol (JMAP)}},
    pagetotal = 10,
    year =      2022,
    month =     jan,
    day =       6,
    abstract =  {This document specifies an extension to "The JSON Meta Application Protocol (JMAP) for Mail" (RFC 8621) for returning the S/MIME signature verification status.},
}