Yes. You can type, or copy and paste, up to 250 email addresses (1 address per line) into the Address/Send screen.
Make sure you have "Type email addresses" selected in the “Add Recipients to Address List" area, and paste (or type) your recipient's addresses. Then click the "Add Recipient(s) to Address List" button to save your changes and prepare your card for sending.
If privacy is your concern, please note that we do not use or expose any of your contacts, as outlined in our privacy statement.