Support mails with my domain.

Support mails with my domain.

Hello,

I would like to know how I have to create the support mails? for example:

support@mydomain.com
hello@mydomain.com
invoices@mydomain.com
sales@mydomain.com
contact@mydomain.com

Do I have to create for each one separately users?, or can I with 1 user create many mail accounts?.

Thanks and regards.