I need make a test with emails, but there is some sandbox for to play?

I need make a test with emails, but there is some sandbox for to play?

Hi Zoho Team

   I need to test some email's campaing, so there is some possibility for to use a sandbox emals, for to work ?, or i need to use real emails in production?

  I need to define template and test it before activate a campaing, thanks in advance for any hint.

Regards,
Pablo