Add feature which makes it possible to store all attachments in a certain folder. I can't test it currently due to some bug in Akonadi, but I'll do that later on.

Also I need to add a check for an existing file with that name and a md5 comparisation to see if it is the same file, if not, save it with another name, But at least it is a start.

Killer feature from Eudora from the past for me.