One of the 'hidden' (but not too hidden) gems of Mastodon is the ability to receive email notifications either always or, more interestingly, when you're not actively using Mastodon (digest emails).
This means that as long as we continue to log in multiple times a day or have apps with active notifications, everything will function as usual. However, if we happen to not log in for a while and miss notifications, we'll receive email updates about our account.
This feature is excellent because there can be situations, as in the case of the @announcements account, where I don't monitor notifications daily, and receiving them via email is definitely convenient to avoid missing potential mentions or responses.
