The community-developed integration between KnowledgeTree and Zimbra, a popular open source email and collaboration suite, comes in the form of a Zimlet or plugin, which adds a KnowledgeTree upload widget to the Zimbra Collaboration Suite user interface. Users can upload emails and attachments to KnowledgeTree by dragging and dropping them on to a designated area. The Zimlet also supports the transfer of key fields from emails to document properties in KnowledgeTree.

Initial development of the Zimlet was undertaken by xrickung, on behalf of Oxford Archaeology. The current version supports KnowledgeTree 3.6.1 and Zimbra 5.0.x. The project is looking for participants, so please join in if you are interested.