Cupid Vault essentially works by creating a two-person shared vault, which Bitwarden calls an Organization. This allows one person to assign logins to a vault that can be shared with another person.
Bitwarden has launched a new system called 'Cupid Vault' that allows users to safely share passwords with trusted email addresses.
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Bitwarden

The best option for free, easy-to-use, open-source password management ...
Bitwarden makes it easy to share items from within the password manager to teams and other groups of users. Jack Wallen shows you how to use the feature. Bitwarden is one of the best password managers ...
Bitwarden Review: Is It a Secure Password Manager? Your email has been sent Bitwarden is an open source password manager that offers a generous free version, an ...