A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Enhancements to Internet email to support diverse service environments Working Group of the IETF.
Abstract: «The LEMONADE Working Group — Internet Messaging to support diverse service environments — is chartered to provide a new set of enhancements and profiles to Internet email. The enhancements are to facilitate email use on hosts not only operating in environments with high latency/limited bandwidth links but also constrained with limited resources. The enhanced email must continue also to seamlessly support the existing service.»
«The primary motivation for this effort is — by making Internet mailprotocols richer and more adaptable to varied media and environments — to allow their use by handheld devices to access the Internet wirelessly.»
«The requirements of these devices drive a discussion of the possible protocol enhancements needed to generally support multimedia messaging on limited capability hosts in diverse service environments. A list of general principles to guide the design of the enhanced messaging protocols is documented. Finally, some issues around providing seamless service between enhanced Internet email and the existing separate mobile messaging infrastructure are briefly listed. This document attempts to capture the background, motivation and thinking behind the Lemonade design process.»
http://www.ietf.org/internet-drafts/draft-ietf-lemonade-goals-02.txt