How to Contact a Companion

I added a companion code for someone and I’d like to send them a message. However, their name in the My Companion feature isn’t their actual username so I can’t send them a message by their name. How do I send them a message?

You can make a Topic.
Add your all companions in this topic by taghing their names. Now bookmark it.
When you wanna contact your companion just open your bookmarked topic and click on that name.