Every person, every group, every institution, every business and everyone who need people to buy, partner or hangout in a digital world. Because e marketing implementation is so simple and provided that you need people in search engines, directories, social media and elsewhere in the internet to know you, your business, your services, you will need emarketing to access them (people).
The only person, group, institution or business which does not need emarketing is the one or those who do not need customers, partners or public audience to see their services or deeds. Thes are intranet users who most of the time use networks for their private businesses