Hello, If I encrypt a folder (for example MyFolder) in a profile of Thunderbird, it become MyFolder.axx. This file is recognized as a folder by Thunderbird. After, in Thunderbird, if I compact this folder, its size become 0 and if I try to decrypt it with AxCrypt in the Explorer, I get this message : "The file does not appear to be produced by AxCrypt. GUID mismatch." I lost all the content of MyFolder ! It's a problem. I think that AxCrypt (very well in other respects) should protect its files, but perhaps it's a fault of Thunderbird ? I am afraid what arrives with Thunderbird could arrive with the another softwares.