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When I receive an e-mail,I have to double-click it to open it???

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  • 最近回覆由 user01229325
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Not sure why this is happening all of a sudden?

Not sure why this is happening all of a sudden?

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That is the way Thunderbird always works. If you double click the message header it opens in a tab or new window depending on how you have your options set. If you have the Message Pane turned on a message will show in the pane when you single click on the header. If your message pane got turned off press F8 to turn it back on.