newline in an email

i need to insert a newline in my email's body but didn't work. I tried borth "\r\n" and Environment.Newine

This is my code:

email_body = "???? ??? ???? ??? ??? ???????";
email_body += Environment.NewLine + Environment.NewLine;
email_body += "??? ????? ??????? ?????? ?????? ?? ??????? ???? ??? ????. ??? ??? ?? ???? ????? ?? ????? ?? ?????? ?????? ???? ??????? ???.";
email_body += "\n\r";
email_body += "????? ??????: " + sql_reader["member_cpr"];
email_body += "\n\r";
email_body += "???? ????: " + sql_reader["member_password"];

If the E-Mail is in HTML format, you can use <br /> as an HTML Break.