Report how many checks were missed

Hello,

Thanks for healthchecks.io and open sourcing your project. Keep up the great work.

When I receive a notification that a check is up on pushover it states this:

The check "pine64" received a ping and is now UP.

All the other checks are up.

I think the email notification is also very similar. I was wondering if you could report how many checks were missed? If I have a 15 minute trigger and I miss a whole hour, I would see something like this:

The check "pine64" received a ping and is now UP.
Four previous checks were missed by "pine64"
All the other checks are up.

Would this be a possibility?

Thanks!