MS Office on 2 machines with same email address

I use MS Office on 2 machines that share the same email address,

How can I get a digital email certificate for machine number 2

Hi

You can use the same certificate on both machines.

Check out the knowledge base for exporting and importing the certificate.

https://support.comodo.com/index.php?/Knowledgebase/List/Index/18/email-smime

Garry