SimplePlugin for MacOS 10.9 (Mail.app 7.0)
Just template/example of Mail.app plugin.
Really thanks for project GPGMail https://github.com/GPGTools/GPGMail.
Code contain only base steps for build your oun Mail.app plugin. It done for answering the question
"Why, this piece of f*ck code not worked on 10.9" and for every little noob beginner MacOS dev practice in build own plugin.