Create user without email

Hi!
I want to create users without the need to assign an email

  • Version of Rocket.Chat Server: 3.18.1
  • Operating System: Ubuntu 18.04
  • Deployment Method: snap
  • Number of Running Instances: 1
  • NodeJS Version: v12.22.1
  • MongoDB Version: 3.6.14
  • Proxy: nginx
  • Firewalls involved: