Turns out there are indicator-message, indicator-sound, indicator-application and indicator applet which hosts various programs.
Indicator message is responsible for hosting Empathy, Pidgin and Evolution. I don't need this.
Indicator Sound is responsible for volume icon. I do need this back.
So the solution was to remove indicator-message. (Only if you don't want the 'Envelop')
sudo aptitude remove indicator-messageBe careful that you remove only indicator-message.
Now right click your panel and click add to panel. Search for Indicator Applet and add it.