Built in 2007 and filtering more than 1 billion messages in 2010 alone, Mail Stronghold is a time-tested, cloud-based security solution specifically designed for Zimbra servers by one of the earliest, most experienced Zimbra Gold partners.

You’ll find us among the best prepared to support your security requirements today, and the forseeable future. Architected to support on-demand, load-balanced, cloud security for millions of users in multiple, tier-3, VMware-certified vCloud data centers, our high-security, SAS70 type II / SSAE 16 Type II infrastructure is already rated FISMA-moderate, independently validated by commercial, federal and Department of Defense (DoD) compliance and regulatory standards.

Contact Us with your commercial, educational and government cloud anti-spam/virus RFI, RFPs. Resellers welcome, including for instance Zimbra hosting service partners (HSP), and VMware hosting partners (VSPP).

Service Level Agreement (SLA)

We provide a 99.99% infrastructure and 99.9% service availability guarantee. This guarantee is subject to the limitations of our Agreement with you.

Satisfaction Guarantee

Not only have we a free, 30-day, no-obligation trial, we also have a very simple guarantee: be satisfied or don’t pay for service. This industry-leading promise couldn’t be much simpler, or give you, our clients, more flexibility:

  • let us know why you’re unsatisfied for a calendar month within 15 days of the month,
  • give us 15 days to resolve the issue, and
  • if we can’t resolve the issue to your satisfaction, we’ll credit you 100% of the month’s service. Or if you’ve prepaid for service, we’ll give you the option to terminate service without penalty, and we will return any prepayments.

This guarantee is subject to the limitations of our Agreement with you.