Hello Bram,

Our spam monitoring service automatically blocks the outgoing emails for an account if there's something suspicious or if the domain hasn't been verified. Also, there's a certain threshold of tickets that need to be in the helpdesk to activate the email notification service. Last I checked, your account had just 8 tickets, which might be lesser than the threshold set. 

Can you please try creating a few more tickets and then see if the notifications are getting through as expected?

Cheers!