⟩ How do I control the format of the addresses before the @ sign in a recipient policy?
You can use the following variables: %g Given Name, %s Surname, %i initials in the recipient policy.
Examples:
User: Tommy Lee Jones
Domain: company.com
%g.%s@company.com = Tommy.Jones@company.com
%1g%s@company.com = TJones@company.com
%g%2s@comapny.com = TommyJo@company.com
Less commonly used variables include, %m (alias) and %d (display name).