BOSTON, April 15 /PRNewswire/ --

- Mimecast partners with Iron Mountain Digital to bring new 
Storage-as-a-Service solution for email archiving to market

Mimecast(R), a holistic email management company offering SaaS-based
email archiving, continuity, security and policy control, today announced it
has formed a technology partnership with Iron Mountain Digital, the leading
provider of Storage-as-a-Service solutions for backup, recovery and
archiving. The partnership is a key step in the growth of the Mimecast
Partner Program and allows the company to further broaden its presence and
coverage in North America. Under this agreement, Iron Mountain will leverage
Mimecast technology to power its hosted Total Email Management suite. [See
Iron Mountain press release dated today:
http://www.ironmountain.com/news/2009/impr04152009.asp]

Mary Kay Roberto, SVP and General Manager at Mimecast North America said,
"Our partner ecosystem is expanding according to our plans. The technology
partnership with Iron Mountain Digital demonstrates Mimecast's fulfilment of
its strategic objective to expand the Mimecast Partner Program in North
America. This technology partnership will enable enterprises to control
unmanageable email storage and mailbox growth, manage unpredictable costs,
and give IT departments peace of mind with sophisticated security controls
and end user continuity and search tools." Mimecast was included in Gartner
report, "Cool Vendors in Email Archiving 2009," published March 3, 2009. *

Mimecast has experienced increased demand for its SaaS email management
services from the partner community - demonstrated by 318% revenue growth in
the first nine months of fiscal 2009.

"Iron Mountain Digital's Storage-as-a-Service model offers secure,
cost-effective storage and access to digital information, including email,"
said John Clancy, president of Iron Mountain Digital, the company's
technology business unit. "The Total Email Management Suite, powered by
Mimecast(R) technology, helps companies further manage their digital
information and securely retain, recover, discover and delete email at the
end of its lifecycle, while also providing continuity and hosted in Iron
Mountain's data centers. With the new email management solution, businesses
benefit from storage within Iron Mountain's secure data centers, representing
a tighter chain of custody and protection of business data."

About Mimecast:

Mimecast delivers SaaS-based enterprise email management for archiving,
discovery, continuity, security and policy. By unifying disparate and
fragmented email environments into one holistic solution that is always
available from the cloud, Mimecast minimizes risk and reduces cost and
complexity, while providing total end-to-end control of email. Founded in the
United Kingdom in 2002, Mimecast serves more than 2,000 customers worldwide
and has offices in Europe, North America, South Africa, Scandinavia, the
Middle East and the Channel Islands. www.mimecast.com

* Mimecast was included in Gartner report, "Cool Vendors in Email
Archiving 2009," published March 3, 2009. The report was authored by: Carolyn
DiCenzo, Kenneth Chin, Adam W. Couture.

About Gartner's Cool Vendor Selection Process

Gartner's listing does not constitute an exhaustive list of vendors in
any given technology area, but rather is designed to highlight interesting,
new and innovative vendors, products and services. Gartner disclaims all
warranties, expressed or implied, with respect to this research, including
any warranties of merchantability or fitness of a particular purpose. Gartner
defines a cool vendor as a company that offers technologies or solutions that
are: Innovative, enable users to do things they couldn't do before;
Impactful, have, or will have, business impact (not just technology for the
sake of technology); Intriguing, have caught Gartner's interest or curiosity
in approximately the past six months.