A team member is leaving the company. His Asana account is connectet to a @company domain. But we want to keep him as a guest in special projekts but delete them from the member account. How can he change his asana login email adress?
Happy Friday @OSTMOST 
and thank you for reaching out.
To change his email address will need to first add his personal email address to the Asana account and then remove the company’s one following the steps outlined here: How to Control Your Profile Settings in Asana | Product guide • Asana Product Guide
Please let me know if you have any follow-up question! Have a great weekend!