Not sure if it already works, otherwise consider it a suggestion - it would be great to have the option to be able to create saved groups using emails that contain wildcards. For example - my email address is lee@company.com. when testing features / our app we often create new user accounts and use a syntax like lee+test1@company.com. It would be great to be able to setup a saved group with a wildcard so i don't have to add lots of users to our internal test user saved group (e.g. lee+*@company.com to capture all test accounts i might create automatically).

Thanks for the feedback! I haven't tested this thoroughly, but this should be possible with advanced targeting. You can use regex to match strings and include all those emails automatically: https://docs.growthbook.io/features/targeting#advanced-mode