I clicked "Archive" on one of my Sentry issues. Will it still count towards my quota?

Yes, once events have been processed and grouped into an issue they count towards your quota. Setting an issue’s status to "archived" in the UI prevents you from being notified about future events for that issue. "Archive Until" can be a great way to improve your workflow. For further information, please read the relevant docs here.

Any events that are ignored on the client side (i.e beforeSend) do not count toward your quota since they never hit our servers.