For some file types (such as JPG, MP3 and MP4) the "Share" options in the built-in file manager or in Astro offer Bluetooth, but other files cannot be shared that way (some other options such as DropBox are available...). Renaming the file with a "proper" extension lets me send it over BT, but how can I do this more directly?
Running Marshmallow 6.01 on Moto G 3rd gen
Running Marshmallow 6.01 on Moto G 3rd gen