Fortisandbox Cloud licence

Hi,

I'm going to buy Fortigate 101F device + 24x7 FortiCare and FortiGuard Unified (UTM) Protection

and FortiMail-200F + 24x7 FortiCare and FortiGuard Base Bundle Contract. With Fortigate UTM licence I will get licence to FortiSandbox Cloud, now my question is I need Sandbox in Fortigate and Fortimail so do I need to buy separate Sandbox cloud licence for Fortimail if I have already in Fortigate?

thanks.