E-mail is a commodity. While mission critical, e-mail is not a business differentiator in most cases. Move to a utility viewpoint regarding e-mail. To begin, understand the TCO of on-premises e-mail provisioning and compare to hosting charges.
Understand On-Premises E-Mail TCO
To decide whether to use a hosted e-mail services provider, enterprises need to understand the TCO of their present (or proposed) on-premises solution. Monthly hosting costs look daunting when hidden on-premises costs are left unstated.