Lemonade refers to an IETF working group formed to address the requirements of supporting standards-based email in a mobile or other resource-constrained environment. A "resource-constrained" environment is one where any or all of the following might be encountered:

  • Low bandwidth, high latency networks
  • Intermittent network connectivity
  • Scarce power and compute cycles
  • Minimizing data usage is a goal
The Lemonade Profile (RFC 5550, http://tools.ietf.org/html/rfc5550) defines a set of IMAP and SMTP extensions that address these constraints. Sun Java System Messaging Server implements the extensions defined in RFC 5550.

For more information on how Messaging Server supports Lemonade, see Messaging Server Lemonade Profile 1 Support.