As a business that accepts credit cards, never ask for a credit card number to be emailed. If you provide a form for a customer to complete, you should state very clearly that full credit card numbers and expiration dates should never be emailed on the form. Also this applies to this same info left on voice mail. This is for the security of credit card data of your customer and for your business to adhere to PCI Compliance per the card brands.
If you have questions about this subject or other concerns related to Point of Sales Systems or credit card processing, contact us anytime via email firstname.lastname@example.org or call us at 727-916-7294