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由 Afrow UK 发表于 Jan. 20, 2014 · 永久链接

As with the original plug-in, you can find the Import menu item under Tools -> Import Filters. This is under the original menu bar, not the newer "Thunderbird Menu" akin to Firefox's. Right click on top of Thunderbird and tick "Menu Bar" to view it. As for no file extension for the exported file, just add one yourself - it's not necessary though.