Help needed pleeeeaaasssee re thunderbird

Hi guys.I've lost some emails out of a folder.I was cleaning them up out of a folder and I was 'SHIFTING AND ARROW DOWN' to group them - then Poof!!they all disappeared.Not in deleted or any other folder.what do I do know.where do I start looking.I found one email (as I remember one word) - I instructed for set of these to go back to folder but it's not appeared.:-(TIA

geek_skinner2, Jan 10, 4:01 am

tiawith a bit of playing around I've found them

geek_skinner2, Jan 10, 4:21 am

Backup the files using MOZBACKUP so if it happens again you can find them.

geek_thewomble1, Jan 10, 6:07 am