I have recently received an email from a store that in the mailbox comes with extra information (discount tag, and time-sensitive expiration date) - however, this information is not being shown in the email it is in the subject line and with a countdown.
Can you help me understand how this can be coded? Is it possible to code like this?
![](https://uploads-us-west-2.insided.com/klaviyo-en/attachment/16f9eedf-8d85-48c5-8bc1-1f3653a19b22.png)