'发件人', "SENDER_EMAIL_ADDRESS" => '邮箱地址', "SENDER_SMTP_SERVER" => 'SMTP服务器', "SMTP_MAIL_ADDRESS" => '发件箱帐号', "SMTP_MAIL_PASSWORD" => '发件箱密码', "EMAIL_ACTIVATION" => '邮箱激活', "EMAIL_SUBJECT" => '邮件标题', "EMAIL_TEMPLATE" => '邮件模版', "EMAIL_TEMPLATE_HELP_TEXT" =>'请用{$link}代替激活链接，{$username}代替用户名' );