Gmail is a free, advertising-supported email service offered as part of Google's G Suite, with 15GB of storage, color-coded inbox filters and unsend button.
The Receptionist is the most versatile, effective and easy-to-use visitor management system available from offices with just a few employees to others over 3,000. The app is used by hundreds of businesses around the globe.
Mimecast Email Continuity ensures continuity when primary email systems are offline, and customizable thresholds let administrators monitor inbound and outbound email.