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any chance of getting this updated for thunderbird 3? would love to try out the new alpha builds, but my message filters are holding me back. really didn't want to have to create them all again.

Это отзыв для предыдущей версии этого дополнения (1.3.6.1). 

try this: https://addons.mozilla.org/en-US/firefox/downloads/file/34530/thunderbird_message_filter_import_export-1.3.6.3-mz+tb.xpi