Is it possible to develop a functionality, so that it is possible for each mail in the message list, to find all related messages (not only subconversations, but all mails from same sender throughout any mailbox), and this in one-click. I suppose that this can be done by automating the search or filter functionality, but as a user now you always have to define your filter again.
This would be a great help to quickly clean-up or organize your mailboxes.
Thanks in advance,
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