In such cases, you can use temporary email addresses or create several new mailboxes on existing services.

If this doesn’t work or is too complicated, you can consider buying ready-made email accounts. This often solves the problem quickly and without too much hassle.

Passwork is a password management system that allows users to securely store, generate and manage passwords and other sensitive data. It is suitable for both personal use and business environment. More information on password manager for teams is here. I am sure that this system can help you keep your data safe.