How can you control who receives a magic link email?
If you wish to limit who can receive the magic links you can set allowed_usernames config value to a regular expression. If the email address given passes the regular expression the request to send a magic link will progress. No magic link email will be sent for any non-matching email address.
Visit admin/configuration for example https://example.com/admin/configuration
Add a new config value with the key being allowed_usernames and the value being a regular expression that will pass for any address you wish to receive a magic link email.
Save and restart the API service for the new values to take affect.
Setting allowed_usernames via environment variable
Please set the allowed_usernames environment variable following the instructions for your deployment method.
