Hi @Idan so this automation would be achieved by adding a rank that sends a Private Message to any user who is newly registered. You can add certain actions to the rank that once performed will then trigger other certain actions e.g PMs and automatic new roles.

There are some helpful pages here that go into a bit more detail about how to setup + configure this functionality:
 

Thank you Tom! 

We do this with ranks as well! I’ve got ranks tied to custom roles, so when I assign someone the custom role of customer, partner, or employee, they get a welcome message tailored to that role. Works pretty well!