WFH email explosion- time to retire your inbox?

At an average minute per email (those that need a response needing more, others less), that meant 2 hours per day working through emails. With pandemic WFH, that has gone up by 50%. So you have to set aside up to 3 hours per day to deal with email. And you have to come up with strategies to block off this time especially If you have back to back meeting days. So I am all for simpler communications (and rules around email lengths- no more 3 page essays!). But project chat boards do need better organizing- love the ability to call out a specific person using @, but I should be able to filter by team member or topic.