Many of my clients use Gmail as their email client, but do not know the powers that can be unleashed!
I am forever stressing the importance of consistency in branding down to the finest detail. Tying in your email address to your domain is an important aspect. Every time you reinforce your brand you communicate value in your product or service and that you command your brand voice. So ... if you use Gmail, there is a way to send mail using the email associated with your domain, which you will have to setup with your host. Once you have that done, follow these simple instructions to set up this email in Gmail.
Another option is to hire me because I can do all this and more for my clients! (except windows. I don't do windows :o)