NotifySubmit.cs

public class NotifySubmit
{
    public void Process(WorkflowPipelineArgs args)
    {
        var contentItem = args.DataItem;

        var currentUser = Sitecore.Context.User;
        Item ownersRoot = SiteConfiguration.GetOwnerssRootItem();//gets the root item of owners so we can traverse it later

        var comment = args.CommentFields.Values.ElementAt(0);//gets the comment add this to the email
 
        //############## Build you Email content #######################333
        // to use the send mail code below you should add emailbody, fromemail and subject
        //I would recommend to add direct links to content editor/experience editor
        //  /sitecore/shell/Applications/Content Editor.aspx?fo= + contentItem.ID
        //  /?sc_mode=edit&sc_itemid=" + contentItem.ID                   
          
        Log.Info("NotifySubmit - User request from: " + currentUser.Name, this);
        foreach (Item owner in ownersRoot.Children)
        {
            Role editorRole = Role.FromName(owner["Editor Role"]);

            if (currentUser.IsInRole(editorRole))
            {
                var users = System.Web.Security.Roles.GetUsersInRole(owner["Publisher Role"]);
                foreach (var user in users)//we travers all the users who has the correct role and send them an notification email
                {
                    var membershipUser = System.Web.Security.Membership.GetUser(user);
                    var email = membershipUser.Email;
                    if (email != null)
                    {
                        var emailMessage = new MailMessage(fromEmail, email, subject, emailBody);
                        emailMessage.IsBodyHtml = true;
                        MainUtil.SendMail(emailMessage);
                        Log.Info("NotifySubmit - mail sendt to: " + email, this);

                    }
                }

            }
        }
    }
}