Privnote

It is very simple to use, you have to write the personal message you want to send, set the time in which you want the note to be destroyed, enter an encryption key and an email in which you will be notified that the note has been destroyed.

Then it will give you a link in which you can observe the note, just send it to the person you want to read your personal message and the password.

It is available in several languages.