Mail Assistant
Better visibility and real control over high-volume Apple Mail accounts.
Mail Assistant is a macOS app that makes an existing Apple Mail setup searchable and manageable. It does not fetch, send, or store mail of its own — everything it shows is read from the copy of your mail that Apple Mail has already downloaded to your Mac, and everything it changes, it changes by asking Apple Mail to do the work.
Deeper analytics
Go beyond basic storage stats: senders ranked by volume and size, what is arriving week by week, and lists of senders who have gone dormant or that you have never once opened.
Multi-account bulk action
Search every account at once, then file, trash, mark or unsubscribe from hundreds of messages in a single pass.
Native, reversible execution
Nothing changes until you approve it, Apple Mail carries out every change natively, and what you move can be put back.