Thunderbird ist schon in der Grundausstattung ein mächtiges Programm. Anspruchsvolle Anwender können den Open-Source-Mail-Client mithilfe von Extensions perfekt auf ihre Bedürfnisse abstimmen. Wir stellen die aus unserer Sicht gelungensten Add-ons vor.
When you delete or move a message, most e-mail programs ("clients") simply hide the message and mark it as ready for physical deletion later on. The "deleted" messages are still stored in the folder - even emptying the Trash does not remove them. The hidden messages are not physically removed until the folder is compacted (not to be confused with compressing a file). If you don't compact your mail folders periodically, they can grow very large.
COSIMail is an extension for the Email-Client Mozilla-Thunderbird. COSIMail utilizes Semantic Web standards for data represantation and stores Emails in RDF-based Repository using X-Cosim (Cross-Context Semantic Information Management). Conversations, file transfers, tagged Emails etc. are available for other applications.