How does Mimecast ensure the continuity of email service?

Mimecast ensures the continuity of email service primarily through its cloud-based architecture and redundant systems. This design allows for high availability and resilience against disruptions. The cloud-based infrastructure means that email services are not tied to a single physical location, reducing the risk of service interruptions caused by hardware failures or localized incidents.

Redundant systems play a critical role in maintaining service continuity by providing backup resources that can automatically take over if primary systems experience a failure. This level of redundancy ensures that email services remain operational even during maintenance, unexpected outages, or disasters, allowing users to access their emails without interruption.

In contrast, relying solely on designated server locations could create a single point of failure if those locations experience issues. Using installed software on users' devices does not provide the necessary centralized management and oversight needed for continuity. Lastly, periodic manual backups, while useful for data recovery, do not address real-time service continuity since they can lead to gaps during which emails could be lost if an outage occurs.