I’ve previously asked for Export presets similar to the way you can build up presets in Lightroom.
Having said that, you could create a folder in Dropbox and send the link. You could then go Save-As and make a snapshot directing images to the desired Dropbox. This allows you to resize the images and choose the folder.
I think this could vastly improve PM especially if the snapshots/presets could be added to the bar next to the Upload icon.