Salesforce -- Apex发送电子邮件

Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();            mail.setSubject('Your subject name');            //此处打印报错信息，可以写在trycatch中，报错则直接发送邮件通知            mail.setHtmlBody('\n\n--------- '+e.getStackTraceString()+':'+e.getMessage()+'  ----------\n');            mail.setBccSender(false);            mail.setUseSignature(false);            List<String> ToAddresses = new List<String>();            ToAddresses.add('[e-mail]');            mail.setToAddresses(ToAddresses);            List<Messaging.SingleEmailMessage> messages = new List<Messaging.SingleEmailMessage>();            messages.add(mail);            List<Messaging.SendEmailResult> results = Messaging.sendEmail(messages);