Adding a "Query"-icon (easy)
|Reported by:||humdinger||Owned by:||stippi|
Something more useful than the "Inbox" and "Mail"-icons IMO: A "Query"-icon with a dropdown-arrow besides it. Clicking it results in a dropdown menu offering a number of queries, that can be defined in ~/config/settings/Mail/Queries. A few will be predefined there: "Same Sender", "Same Recipient", "Same Subject". Maybe more.
Those open of course the respective queries. [Borat: Nice!]