Listen, ships can't all be huge, monolithic, game-changing features. Sometimes, they're just small, incremental improvements that make your life a little easier. This is one of those ships.

I am excited about this step-change function for two reasons:

1. It makes it much easier to do ad-hoc emails for specific cohorts of subscribers. For example, if you want to send a special email to everyone who subscribed in the last week, you can now do that in a few clicks.
2. It's a stepping stone to shifting some of the logic and visualization in the Analytics page into the subscriber & email pages, respectively. (Not committing to anything yet, but I think combining the 'list' and 'aggregate' functionalities into a single page will make exploration and insights a little more ergonomic.)

(P.S. — this functionality is of course also live in the API. Just call /v1/subscribers?date[]=2023-05-01&date[]=2023-05-08 to get all subscribers who subscribed within that range.)