Why does HP use SMTP for MFP email?

A.
SMTP provides quick network discovery of all network printing devices.

B.
SMTP provides access across a wide range of mail services while relieving the need for
software clients and/or custom applications.

C.
SMTP is by default an AES 128bit encrypted email delivery solution.

D.
SMTP is a custom protocol HP created for sending email through client-specific applications
and document processing systems.

Explanation:
Reference:http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?sp4t
s.oid=2512308&spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrpnavigationalState%3DdocId%253Demr_na-c00766842-
5%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.begCacheTok=com.vignette.cach
etoken&javax.portlet.endCacheTok=com.vignette.cachetoken