Here is the way to Send Email to multiple recipients using .Net in Dynamics AX:
System.Net.Mail.MailMessage mailMessage;
System.Net.Mail.SmtpClient smtpClient;
str SmtpServer;
str sub, body, to, fromAddr;
;
sub = "Test Email" ;
body = "Testing Email, Plz delete this";
fromAddr = "donotreply@AX-Prod.com";
to = "user1@test.com,user2@test.com";
mailMessage = new System.Net.Mail.MailMessage(fromAddr, to);
SmtpServer = "smtpServer";
mailmessage.set_Subject(sub);
mailmessage.set_Body(body);
smtpClient = new System.Net.Mail.SmtpClient(SMTPServer);
smtpClient.Send(mailmessage);
System.Net.Mail.MailMessage mailMessage;
System.Net.Mail.SmtpClient smtpClient;
str SmtpServer;
str sub, body, to, fromAddr;
;
sub = "Test Email" ;
body = "Testing Email, Plz delete this";
fromAddr = "donotreply@AX-Prod.com";
to = "user1@test.com,user2@test.com";
mailMessage = new System.Net.Mail.MailMessage(fromAddr, to);
SmtpServer = "smtpServer";
mailmessage.set_Subject(sub);
mailmessage.set_Body(body);
smtpClient = new System.Net.Mail.SmtpClient(SMTPServer);
smtpClient.Send(mailmessage);