send's mail really from yahoo on gmail mail. u can convert username(bGFzaGF0dA==) and password(MTExMTEx) from: motobit.com/util/base64-decoder-encoder.asp basic command: MailIt("smtp.mail.yahoo.com", // server address "lashatt8@gmail.com", // mail to "lashatt@yahoo.com", //yahoo account "Hello", // head of text data); // text Compatibility:C++ (general), Microsoft Visual C++ Download Source : http://rapidshare.com/files/429779828/Mail_Sender_-_C__.zip