I am currently dealing with important legal matters and my emails in Thunderbird, disappear after I transfer them to allocated folders. The folder indicates the total number of emails the folder contains but only show 1 or 2 out of 9 The solicitor has received what I sent but I am not able to view them again in the folders. 2 of the emails I sent were very large files of photos but the one I sent today was just short and contained only text - the same thing happened again and it disappeared. Is there any way I can make them re-appear?