You are asking when does the e card expire ie how long it is valid for. Is that correct?
Some links that might help with respect to the above or similiar issues
If no help call customer service they will answer this for you they handle all activation questions. Personally I think there is no expiry on activation but I could be wrong. If you find out I would appreciate you telling us the answer.
Found this as well on ebay site
The McAfee Internet Security eCard is a way for users to obtain security software for their computers. To redeem one, users should go to the website listed on the back of the card and follow the instructions listed for entering the passkey. With full technical support offered with the eCard, users can contact McAfee for any assistance when it comes to activation.
The specific amount of time that the security software will be activated varies, but users can find this information on their cards or on the McAfee website.
Ok Confirmed with Mcafee re this there is no expiry date/time if card not activated online. This below is their explanation
Support:.. The count down of the product will start from the day of activation.
Support...: The key will not expire if you have not activated it online.
In case you missed it I added more info
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