Is this a Wix Code question or a question of notifications when a new visitor is on your site? If the later contact support@wix.com instead for best help.
If it’s a wix code question and if u r interested, it’s possible to track user location, page visited, where he came from… and possibly everything with wix code in every page and write that in a database and trigger emails if some event that u r interested happens by a specific user or multiple users in ur website… It can also be done by Google analytics…but with wix code you can do whatever you want with flexibility…