As a paid member of BlueMountain.com, you can use the Sent eCards feature to cancel a pre-scheduled eCard up to 24 hours before the delivery date.
Click on the "My Account" button located at the top of any page, then click on the "eCards & Gifts Sent" link.
Locate the greeting you wish to send. The Sent eCards is organized by month. Use the dropdown box at the top of the page to select the month the ecard is to be sent. Under "eCards scheduled to be Sent" Click on "delete" to cancel the eCard.
Please note that ecards sent for immediate delivery cannot be cancelled.