I can't find the link between Indesign and Adobe Legacy and the subjects of this forum (e-mail, chat and VOIP). May I suggest you try a more suitable one like Desktop Publishing.
Moreover, there doesn't seem to be a program called Adobe Legacy. So it's a rather unclear question.
I was just asked by may supervisor to find out if InDesign Creative Suites 3 can be exported and subsquently used in Adobe Legacy. Can you help me out on this one? Thanks and million!!!