Hi @nols26 ,
We do not have a way to automatically send out a Welcome PM to a newly registered user through the API but there is a workaround you could try.
You could set it up so that the user's rank changes right away and that would send them a PM, and the individual rank PMs that get sent can be customized to add a welcome message.
Check the section "Creating specific notifications by rank":
https://community.khoros.com/t5/Rankings/Customize-the-rank-up-notification-private-message/ta-p/72102
If you make the rank with no requirements, make the next rank something quickly achievable like 1 minute registration age.
... View more