== Previous releases ==
The following versions (except 2.0) are obsolete and have been reached end-listed comprise of-lifeall the previous releases of Thunderbird.
=== Thunderbird 1.0 and before ===
Thunderbird 1.0.x is obsolete and will no longer be supported with security updates.
* Build
=== Thunderbird 1.5 ===
Thunderbird 1.5.0.x is obsolete and will no longer be supported with security updates.
* Build
== Miscellaneous documents ==
* [[Thunderbird:Future_of_Thunderbird|Discussion on the future of Thunderbird prior to formation of MailCo]]