Find text within an email being viewed
Currently there is only a search interface for filtering emails. Cmd-F while viewing an email switch to this (hiding the current email).
Worse, when viewing an email as a separate window, Cmd-F brings up the search interface in the main window, while giving no indication that it's done anything in the email window. If the email window is obscuring the main Airmail window then you can't tell that it did anything at all. This is sufficiently bad as to border on being a straight out UX bug.
Right now if I want to find something INSIDE a specific email I have to print it and search the PDF, which is pretty awkward. Some facility for doing this within Airmail would much improve the experience of using the program.