Hello Stephan,
I'm sorry to hear that you have troubles, I will try to help you, but I need some more info:
- Please do not Empty Trash, or delete anything at this point. Do you maybe have a Mail folder or folder Mail Downloads in your Trash?
- when you protected mail, how did you do it? By selecting Mail as application to protect, or were you adding folders by hand?
- did the encryption operation complete successfully?
- is it maybe that you did not have sufficient free space on your disk when encrypting your mail folder, as Mail folders tend to be quite big?
- when you try to launch Espionage, what does happen?
- when you go in Finder to your home folder/Library and click on the folder called Mail, and Mail Downloads, what does happen?
- do you have a padlock icon in your menu item?
Please answer me these and I will then try to help you further.
Rgds
Zsolt