Can I save multiple email addresses in the same field

Hi

Can I save multiple email addresses in the same email address field. i.e. client has 2 emails addresses that need to be used.

email1@myemail.com & email2@myemail.com

Rather than saving them in separate fields and selecting 1 as the favorite, can I save them both in the same field separated by a ; or a , or something i.e.

email1@myemail.com ; email2@myemail.com