The real MUA issue is that for some reasons they are stuck in a deep past. The sole modern MUA we have are not for generic users, like notmuch (-emacs or some o

The real MUA issue is that for some reasons they are stuck in a deep past. The sole modern MUA we have are not for generic users, like notmuch (-emacs or some other frontend) and mu. We need something offering: - searching like notmuch/mu, meaning offering a local auto-download of all messages or all messages under specific folders, complete trees; - being tag-based or at least offering tags and rules to apply them automatically - offering filtering like MailDrop - offering piping messages to external tools (like automatic grab attachments and archive them appropriately) This IS NOT HARD but is made hard due to the actual state of things, against users posses and power to makes anything a service. Thunderbird is not good at all in that sense, it's just another '90s-style MUA as K-9.