Don’t send welcome mail to CRM users

Hey there.

I have activated the welcome mail in Ultimate Member, which works very well. However, I have recently started using a CRM system (PressPoint), where I’m importing lots of user just to keep track of them. As default, Ultimate Member sends a welcome mail to these as well, and I urgently need a way to stop this.

PressPoint CRM is bypassing default WordPress user registration, but it seems like Ultimate Member is listening for any creation of users. Can I implement a check somehow, to send mails only when the user is registering themselves through frontend? This is done from both an ultimate member signup form and through Gravity Forms.