Visual voicemail has access to a visual interface, which shows the list of playable voicemail messages and sometimes can include decryption of those messages.
According to the American Marketing Association, - "Marketing
is the activity, set of institutions, and processes for creating,
communicating, delivering, and exchanging offerings that have value for
customers, clients, partners, and society at large." A company, which
provides marketing services, should be capable of doing all the above listed.