Global user notification settings (email frequency)

[David Scher]

There are settings for global user notification settings (i.e. email, notifications, disabled) and I can set it so that, by default, users automatically follow content they start or comment on, but I don't see where I can globally set how often users are notified via email of replies, even though this is a setting at the user level (see screenshot).

Is there some way to set the default for all users to the one selected below, rather than a notification after each new post? 

Thanks in advance for any help!