@techreport{welzl-expires-00,
    number =    {draft-welzl-expires-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-welzl-expires/00/},
    author =    {Thomas Nolf and Michael Welzl and Jacob Palme},
    title =     {{The Expires Header in E-mail }},
    pagetotal = 6,
    year =      2008,
    month =     aug,
    day =       4,
    abstract =  {This memo introduces a new email header called Expires. Using this header, the sender of an email can state that (s)he believes this message will be irrelevant after the indicated date/time. The receiving MUA can then automatically detect that a message has expired and facilitate handling of such emails for the user.},
}