Sieve Email Filtering: Snooze Extension
draft-ietf-extra-sieve-snooze-00

Document Type Active Internet-Draft (extra WG)
Authors Kenneth Murchison  , Ricardo Signes  , Neil Jenkins 
Last updated 2020-08-10
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EXTRA                                                       K. Murchison
Internet-Draft                                                 R. Signes
Updates: 5232 (if approved)                                   N. Jenkins
Intended status: Standards Track                                Fastmail
Expires: February 8, 2021                                 August 7, 2020

                Sieve Email Filtering: Snooze Extension
                    draft-ietf-extra-sieve-snooze-00

Abstract

   This document describes the "snooze" extension to the Sieve email
   filtering language.  The "snooze" extension gives Sieve the ability
   to postpone the filing of an incoming into a target mailbox until a
   later point in time.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on February 8, 2021.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   2
   3.  Snooze Action . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Mailbox Argument  . . . . . . . . . . . . . . . . . . . .   3
     3.2.  Weekdays Argument . . . . . . . . . . . . . . . . . . . .   4
     3.3.  Times and TZID Arguments  . . . . . . . . . . . . . . . .   4
       3.3.1.  Awaken Times Examples . . . . . . . . . . . . . . . .   4
     3.4.  Interaction with Extensions to the Fileinto Action  . . .   5
       3.4.1.  Imap4flags Extension  . . . . . . . . . . . . . . . .   6
       3.4.2.  Mailbox Extension . . . . . . . . . . . . . . . . . .   6
       3.4.3.  Special-Use Extension . . . . . . . . . . . . . . . .   7
       3.4.4.  MailboxID Extension . . . . . . . . . . . . . . . . .   7
   4.  Mechanics of Snoozing Messages  . . . . . . . . . . . . . . .   7
     4.1.  SMTP Future Message Release . . . . . . . . . . . . . . .   8
     4.2.  "Snoozed" Mailbox . . . . . . . . . . . . . . . . . . . .   8
   5.  Implementation Status . . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   9
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  Registration of Sieve Extension . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  11
     9.3.  URIs  . . . . . . . . . . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Users are not always ready, willing, or able to read and respond to
   email messages at the time of their arrival.  Sometimes it is
   desirable to have messages appear in a mailbox at a more convenient
   time for the user to act upon them.

   This document defines a new Sieve action command "snooze" that
   postpones filing a message into a target mailbox until a later point
   in time.  The capability string associated with this extension is
   "snooze".

2.  Conventions Used in This Document

   Conventions for notations are as in Section 1.1 of [RFC5228],
   including use of the "Usage:" label for the definition of action and
   tagged arguments syntax.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and

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