Change topic subscription to daily or weekly digest

When I follow a topic, I expect an option to receive a daily or weekly digest on what I missed, but instead the only option is to receive an immediate email notification every time something new is posted. This fills up my Gmail inbox VERY quickly, and I don't like that. I only want immediate notifications for posts that I am actually participating in.

Additionally, I would like to be able to filter the notifications I receive based on language. I often receive emails about new posts that are in languages I can't even read, which also floods my inbox.