* SMS (and WhatsApp) for direct communications (disabled for an hour or two when seeking flow).
* Phone calls from family and close friends (filter disabled for a few hours when expecting an important call from elsewhere)
* Mentions and DMs on Slack (work hours only)
* Calendar
* Occasional temporary exceptions (Airbnb and airline apps during travel and a few days before/after; Taskrabbit the day before and day of a task; food delivery when expecting one, etc.)
Everything else I try to be notified of through email, which is easier to manage on a pull rather than push basis. I DO NOT allow email notifications. That’s begging for a deluge.
The default when an app or site asks to send me push notifications is a hard NO.
This volume of notifications is very manageable.