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.
(..) I've never seen her. How come? That's how epistolary relationships work. It means they write letters they only communicate by mail. Yeah. I got it. Are those the blue letters? What a womaniser. He's "epistoling" like a boss. What about you? (..)2011 The Intouchables
(..) but I don't think I'll buy it. And I don't have the whole day. Listen, I was asked to give you a tour, believe me I too have other fish to fry. It's almost done anyway. Here, you can communicate with a babyphone. It's like a Walkie-Talkie. You hear him, he hears you. According to the contract, (..)2011 The Intouchables