If you received a success message when you sent the ecard, it means a notification email was sent to the recipient from our site.
If you're sure the email address was correct, then it means the mail notification was sent by our site. However, that's not a 100% guarantee that the recipient will have received it. Many mail providers will have strict filtering policies in place which will either move our mail notifications to a spam folder, or in some cases delete it. Additionally, many people also have additional spam filtering software in place on their computers, which might also trap our emails.
It might be worth asking recipients to check if our notification emails have been moved into their spam folders - either the one on their PCs if using an email application like Outlook / Outlook Express, or online via their mail provider's website.
If you're sure the email address you are using is correct, it might be worth sending yourself an ecard, and then sending them the link to the ecard in an email (i.e. http://jimpix.co.uk/view/get.asp?id=433434dsfdsgg).
Finally - you could always try to resend the notification email to the recipient, to see if they receive it next time around, as spam filtering can sometimes return different results each time. To do so, register as a member, then view your sent ecards and click on the "Resend" option against the relevant ecard ().