Just like this: also on the top bar you should see a counter that shows you the number of messages. Nevertheless DA is a bit outdated in this aspect.
Another things: First of all, welcome to the DeviantART!
I hope you'll find your goals here, and enjoy others' works, too.
Thank you for watching me: I hope my works will make me worth for it
Also thank you for the comment on my
Zoe in Blue image, but I don't really understand your question there. But if I can help you, just refine it, and I am ready to do my best