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  • IETF 116 Yokohama registration now open

    Registration is now open for IETF 116 Yokohama

    • Jay DaleyIETF Executive Director
    24 Nov 2022
  • IETF 115 post-meeting survey

    IETF 115 London was held 5-11 November 2022

    • Jay DaleyIETF Executive Director
    22 Nov 2022
  • Catching up on IETF 115

    Recordings are now available for sessions held during the IETF 115 meeting and the IETF Hackathon, where more than 1500 participants gathered in London and online 5-11 November 2022.

      13 Nov 2022
    • Opportunities for university researchers and students during IETF 115

      The upcoming IETF 115 meeting in London on 5-11 November 2022 is a unique opportunity for networking researchers to learn how RFCs are written, to engage with the Internet standards community to begin to develop research impact, and to meet more than 1,000 leading technologists from around the world currently working in industry, academia, and other organizations.

        1 Nov 2022
      • Suggested IETF 115 Sessions for Getting Familiar with New Topics

        These IETF 115 meeting sessions are likely to include discussions and new proposals that are accessible to a broad range of Internet technologists whether they are new to the IETF or long-time participants.

          24 Oct 2022

        Filter by topic and date

        Filter by topic and date

        Modernizing email and calendars for users and developers

        • Bron GondwanaCo-chair: Calext, EXTRA and JMAP Working Groups

        8 Apr 2020

        While email and calendaring are well-established Internet applications used by billions of people around the world, there is tons of work going on at the IETF right now to maintain and improve the protocols used by client applications to access email and related data from servers and cloud services.

        email envelopes

        The JMAP working group was chartered in 2016, with the purpose of building a new JSON-based protocol with efficient synchronization and push notification on changes. On top of this JMAP protocol (RFC 8620) we added a datatypes for mailboxes, threads and emails, as well as email submission (RFC 8621). And, we’re continuing to add extensions for more advanced email handling. Current working group Internet-Drafts include methods for message delivery notifications, quota management, and S/MIME signatures.

        Meanwhile, with no active working group for the existing email protocols, there was a growing backlog of orphaned Internet-Drafts, everything from the ability to REPLACE emails via IMAP, to use the RFC 6154 special-use names rather than folder names for filter rules via SIEVE, to the ability to cheaply read the size and access control information of mailboxes with a single IMAP list command. The Email mailstore and eXtensions To Revise or Amend (EXTRA) working group was chartered in 2017 to work concurrently on updating the existing protocols and process that backlog of proposed extensions.The EXTRA working group has already produced 9 RFCs, and is currently focused on the major project of producing the next revision of the IMAP4 protocol (imap4rev2), folding in the most popular extensions and fixing some warts.

        calendar image

        The Calendaring Extensions (CALEXT) Working Group has been around since 2014 as a home for all things calendar related. Working in conjunction with the industry group CalConnect, the CALEXT working group has been documenting the existing behavior of some proprietary calendar extensions and proposing new calendar extensions. Most recently we have been building a brand new JSON-based representation of calendar events (jscalendar) which has developer-friendliness as a key goal. Our hope is that this new format will encourage non-specialist developers to use our standard format when including scheduling information into products other than the traditional “grid” calendar view, rather than rolling their own data models. With the jscalendar format submitted to the Internet Engineering Steering Group (IESG) for publication, the CALEXT working group is turning its focus back to ICALENDAR and CalDAV extensions.

        The JMAP working group is taking jscalendar and building JMAP Calendars, using the jscalendar format to model events, and also adding scheduling and per-user data facilities.  For Contacts there is no existing IETF group that was a better place to develop the data format, so the JMAP working group is concurrently writing a jscontact format for storing addressbook data, which will be extended in the same way to allow contact information to be managed via the JMAP protocol.

        If you are interested in contributing or want to know more about any of the work underway, the best way to get involved is to join the CALEXT mailing list, the EXTRA mailing list, or the JMAP mailing list, respectively.

        About the Author

        Bron Gondwana is CEO of Fastmail, where he has been helping improve email for over 15 years. He is also a lead developer on the Cyrus open source mail server. At the IETF, he is a co-chair of three IETF working groups in the Applications and Real Time area, working with protocols for personal information.


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