Send email using late binding CRM 2011

You can easily send emails using late binding in CRM 2011 here is the code snippets to send an email.              

WhoAmIRequest systemUserRequest = new WhoAmIRequest();
                WhoAmIResponse systemUserResponse =                    (WhoAmIResponse)serviceProxy.Execute(systemUserRequest);
                Guid _userId = systemUserResponse.UserId;
                Entity Fromparty = new Entity("activityparty");
                Entity Toparty = new Entity("activityparty");
                //set partyid
                //You can refer http://msdn.microsoft.com/en-us/library/gg328549.aspx to get acitivity party entity attribute
                Toparty["partyid"] = new EntityReference("contact", _contactId);
                Fromparty["partyid"] = new EntityReference("systemuser", _userId);
                //create email  and set attributes
                Entity emailCreate = new Entity("email");
                emailCreate["from"] = new Entity[] { Fromparty };
                emailCreate["to"] = new Entity[] { Toparty };
                emailCreate["subject"] = "subject";
                emailCreate["description"] = "EmailBody";
                emailCreate["regardingobjectid"] = new EntityReference("incident", regardindId);
                Guid emailId = serviceProxy.Create(emailCreate);

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