I have the following issue. From JS code in the add-in app (SP online) I am calling the SP Utilities to send an email to users, in the same SP domain obviously (not external accounts). The function is working correctly only with users who are part of the current group which is operating on the site collection where the add-in is installed. If I try to specify recipients not added in the group they are cut out from the email. When I try to add the wished user account at the group then it get the email. But the users are more than 30000 :) I can't add each one. More over I don't want get them access at the add-in
It is a SP setting? Any idea about??
Thanks in advance