Marketo does offer a BCC option in Marketo Admin, but the BCC is applied on literally every email. If a person wants to be BCC'd on a batch email send, they'll get 1 BCC for every 1 email Marketo sends. (10k email sends = 10k BCC emails). This can be useful for archiving and compliance purposes, but should not be used for simple campaign confirmation. If you just want to make sure the email went out as scheduled, the easiest wasy is to make yourself a record in the database, and include yourself in the batch send.
Also note that if you do have the BCC feature activated on your instance and the email bounces to the BCC email address, the bounce will be logged to the lead record, which may be set to Email Invalid or Email Suspended as a result.