Not at all. Pronotif allows you to send files to anyone in the world without clogging their inbox or your outbox. Documents that are sent to recipients via Pronotif (with the Outlook add-in or via your dashboard) will not be attached to the email. Only links are added to the outgoing communication.
When using the Outlook plug-in, files are not stored. When sending a normal email, you will find copies of everything in your “Sent” folders, which can make your outbox fill up quickly; however, with Pronotif, only the names of the items are kept, as all files can be found and viewed online from your dashboard.
Therefore, no one is cluttered with the inbox or outbox.