neomutt – Saving an attachment in Mutt – how to select a directory using the list view

Browse to the directory ~/a/b/c and then use N to save as a new file in that directory.

You can then either type a file name, or if you want to save under the name that the attachment has, simply hit return: You’ll be prompted “File … is a directory, save under it?” which defaults to yes, so you can hit return again. Then mutt offers to save as ~/a/b/c/name_of_attachment