Need seen message option in pm

Anyone have seen message in private script of 5.0 version

AndroUser I have this in custom code modification, not addon.

AndroUser view on my store [https://x7store.zapchatty.com/] I have this in custom codes for v6.

Share this then. Do not just tell that you have. Share with them, or tell them where they can find. Just telling that you have has no benefit.

x7- that store link doesn’t work anymore. Anywhere I can find this custom code?