private static Dictionary<Group, System.Net.Mail.MailAddress[]> emailLookup = new Dictionary<Group, System.Net.Mail.MailAddress[]> {
        { Group.Advertisers, new System.Net.Mail.MailAddress[] { new System.Net.Mail.MailAddress("michael@interclick.com"), new System.Net.Mail.MailAddress("interclick.marketing@interclick.com") } },
        { Group.Business, new System.Net.Mail.MailAddress[] { new System.Net.Mail.MailAddress("michael@interclick.com"), new System.Net.Mail.MailAddress("interclick.marketing@interclick.com") } },
        { Group.Publishers, new System.Net.Mail.MailAddress[] { new System.Net.Mail.MailAddress("publishers@interclick.com")  } },
        { Group.Technical, new System.Net.Mail.MailAddress[] { new System.Net.Mail.MailAddress("ictechsupport@interclick.com") } },
        { Group.Other, new System.Net.Mail.MailAddress[] { new System.Net.Mail.MailAddress("interclick.marketing@interclick.com") } },
    };

public void btnSubmit_Click(object sender, EventArgs e)
    {
System.Net.Mail.MailMessage mailMsg = new System.Net.Mail.MailMessage();
mailMsg.To.CopyTo(emailLookup[Group.Other], 0)
    }