Adding as duplicate: bug 374853, which describes the same user mistake but compounded by the use of SHIFT+DEL instead of DEL only, thus resulting in permanent data loss.
Bug 308063 Comment 19 Edit History
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Adding as duplicate: bug 374853, which describes the same user mistake but compounded by the use of SHIFT+DEL instead of DEL only, thus resulting in **permanent data loss!**
Adding as duplicate: bug 374853, which describes the same user mistake but compounded by the use of SHIFT+DEL instead of DEL only, thus resulting in **permanent data loss!** Thus carrying over `severity=critical` from closed duplicate bug 374853 based on: (Wayne Mery (:wsmwk) in [comment #4](https://bugzilla.mozilla.org/show_bug.cgi?id=374853#c4) of bug 374853) > sev=critical because of potential dataloss for messages in local folders