You want to add emojis to the subject line of NetCommunity email messages.
Some emojis can be copied/pasted into the subject line of emails in NetCommunity. Although, technically not a feature of the product, it is possible to use emojis in the subject. You're welcome to try any emojis wanted, but it's best to send yourself a test message to confirm the emoji displays as expected. Here is a link to a 3rd party site which has emojis which have worked well in the past of NetCommunity email messages.