Fortigate 100e / Change from address for MFA by mail

Hi,

I try to change the "from" address when mail is sent to user for the MFA authentication. For the moment, each user get the mail with their own address as sender, I would like to put a generic email address like "noreply@fortinet.com". I see everywhere that we have to set up the "reply-to" settings but I don't see it on my fortigate :

Even in CLI I don't have the option to change the from address : 

Is it impossible for my version of fortigate ? I use a HA fortigate (100e), version 7.2.2 build 1255.

Thanks in advance,