Comment 5 for bug 909792

Evolution has also problems copying mails.
*) When I copy mails I often get the "file or directory not found" message and the mails are not copied. CTRL+E on source and destination folder and after that copying again usually is successful.
*) When I copy folders containing mails and subfolders in one local account from one location to another very often the folder-structure gets copied to the destination but in many subfolders (not all) the mails were not copied. It seems that for a subfolder eigher all mails are copied or none at all. There is no error reported. When I open all the folders in the source structure and copy after that, it seems that copying is more likely to succeed.

Could it be a caching-problem?

I suspect also that poor error handling might be part of the problem.

Could you please make sure that evolution under no circumstances silently ignores errors? If evolution can't find out what actually is causing the problem, it's still better to get a cryptic error message than not to notice at all that something has gone wrong...

Surely moving means copying and deleting afterwards. If this is true, could you please also make sure that no deleting can takes place when copying has somehow failed?