http.Headers.Insert(0, 'X-Mailer: ');
http.Headers.Insert(0, 'Precedence: ');
http.Headers.Insert(0, 'Importance: ');
http.Headers.Insert(0, 'MIME-Version: 1.0');
http.Headers.Insert(0, 'List-Unsubscribe: <xxxxxxxxxxxx@[RDNS]>');
http.Headers.Insert(0, 'To: [EML]');
http.Headers.Insert(0, 'Sender:"xxxxxxxx"<xxxxxxxxxxxxxxxxx@[RDNS]>');
http.Headers.Insert(0, 'Subject: __Subject');
http.Headers.Insert(0, 'Reply-To: "test" <reply@[RDNS]>');
http.Headers.Insert(0, 'References: [EML]');
http.Headers.Insert(0, 'Content-Type: text/html; xxxxxxxxxx="us-ascii"');
http.Headers.Insert(0, 'X-ListMember: [EML]');
http.Headers.Insert(0, 'X-Abuse-Reports-To: xxxxxxxxx@[RDNS]');