She likes to 'communicate' [=(more informally) 'keep in touch'] with her sister through/by/via e-mail.
If you're excited about the product, your enthusiasm will 'communicate' itself to customers.
One monkey 'communicated' [='transmitted, spread'] the disease to the others.
(..) much atrocity as he has imagination. New Freedom has sleeper agents here in the U.S. McCarthy is an idiot, but, unfortunately, that doesn't make him wrong. New Freedom communicates to its agents... ...through codes imbedded in newspapers and magazines... ...and that's where you come in. (..)2001 A Beautiful Mind