In out of box AX 2012, user has to have outlook to mail the report which is kind of anoying, cause not all of the AX user has outlook. We can find code snipet to bypass outlook to do that online, but you'll notice those codes are only for the old AX report instead of SSRS report. In AX 2012, the reports are all SSRS reports which means we cannot modify the code in Info\reportSendMail as we did for AX 2009 to bypass outlook.
In fact, it's even easier to do that in AX 2012. In AX 2012, when mailing reports, the class 'SrsReportRunMailer' is executed. What we need to do is just change that class. If you open that class, you'll see the method 'initMailer' decides whether to use SMTP or outlook. When mailing in a batch, it uses SMTP, but when mailing at client, it uses outlook. To change the logic to always go with SMTP, we only need to comment out the 'if' clause and leave the code which takes SMTP. See below,
private void initMailer()
fromAddress = SrsReportRunMailer::buildFromEmailAddress();
// Always use SMTP, never outlook.
// get the mailer object
mailer = this.parmSysMailer();
// validate the from email addresses
if (!fromAddress ||
//inetMailer = new SysINetMail();