Malicious users can retrieve deleted email and try to make password reset to every popular sites and original owner will lost their website / app account.
This is the next part after you successfully set up your own IPsec VPN server. Following these steps allow you to configure your Android, iOS, MacOS, and Linux machine using IPsec/L2TP VPN.
Gmail Confidential mode allow G Suite users sending emails with expiration date, restrict to forward, copy, print, or download email content or attachments.