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emails with attachment in september october and part of november 2017 got deleted as soon as i clicked on them, ver 52

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emails with attachment in september october and part of november 2017 got deleted as soon as i clicked on them, ver 52

emails with attachment in september october and part of november 2017 got deleted as soon as i clicked on them, ver 52

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Thunderbird does not delete messages after viewing them, but viewed messages can be hidden according to the view settings.

Make sure to view all messages and experiment with settings you like best.: press Alt > View (in menu bar) > Folders > All, or a preferred setting that makes sense.

See the Switching the folder pane view support article for more info.