Apple's Mail app lets users mark certain people as VIPs, so that messages from them stand out from the rest of your emails. When people are added as VIPs in the Mail app, emails from them are marked with a star icon to let you know that they're important.
How to Add/Remove Contacts from Mail VIP List on iPhone/iPad iOS 13
If your VIP list is full (maximum 100) and you no longer want to keep people on this list in Apple Mail, this post will help you easily remove people from your VIP list.
You can remove people from your VIP list in Apple Mail by following the methods below.
You can remove someone from your VIP list if you can view that person's recently sent emails in your inbox.