You can retrieve it with get calls as well, although every email will still have its own status to update even though it’s a bulk send. Ex) 100k sends still requires 100k status pulls.
I’d assume for your case best bet is to make a get call that is a data call not an action, drop it in the RG of emails being displayed. This way it’ll only call for what the user is viewing rather than the whole 100k emails.