Labels are a feature that allows you to easily organize and search for the aliases you have created or generated automatically. To be able to sync labels across your devices, you will need to opt-in for data collection from the Firefox Relay settings.
All new Firefox Relay users will be automatically opted in for data collection. If you are already a Relay user, and you have not opted in for data collection, here are the steps you need to follow:
- Visit https://relay.firefox.com/accounts/settings/
- Check the box for Allow Relay to collect data showing the sites on which your aliases are created and used to opt in or uncheck it to opt out of data collection.
- Click the Save button.