It would be amazing if of all mail we have in our folders (especially when one has used the smart-import to move away from other mail providers) can be filtered on specific items as age (e.g. select all mails between 2000-2020) or filesize (all mails with attachments larger then 2 MB) et cetera to be able to select and perform a bulk action on them (bulk delete for example). So this is an adjustment to the current filter and would/should be able to run over all folders (not only the inbox or archive folder).