May 24, 2015

Rackspace chooses Open-Xchange’s dovecot pro on Scality object storage for rackspace email platform

San Francisco, CA
United States

Reliable and scalable email

3.5 million Rackspace email users to benefit from highly-reliable and scalable Object Storage

San Francisco, CA, May 24, 2016 Dovecot, an OX company, has today announced that, Rackspace, one of the largest managed cloud companies in the US, will be using Dovecot Pro to power Rackspace´s Email Platform, which will benefit more than 3.5 million end-users globally.

Dovecot Pro provides a reliable and scalable email back end with fully stateless design to customer installations which have tens of millions of mailboxes and equally high numbers of concurrent users. A long-standing and active member of Dovecot’s open source community, Rackspace is upgrading to Dovecot Pro to benefit from its Object Storage Plugin, which connects with Scality´s massively scalable storage solution.

Dovecot is the IMAP server of choice for isps, telcos, hosting companies and enterprises worldwide and the recommended email server for leading operating systems, such as, redhat, centos, Ubuntu and Apple OSX Server. Famed for its high-performance, security, scalability, modularity and ease-of-use, Dovecot has a market share of more than two-thirds (68.49%) of IMAP servers worldwide according to Open Email Survey.

“Rackspace is an extremely valued and long standing member of the Dovecot open source community, working with us to constantly improve Dovecot’s IMAP server offering for the benefit of end-users across the globe” said Timo Sirainen, chief architect and co-founder, Dovecot. “Large email providers are under constant pressure to reliably grow their storage capacity at an affordable price for both themselves and their end-users. By partnering with Dovecot, Rackspace, famous for its fanatical customer support, has tackled this challenge head on.”

“By moving to Dovecot Pro and Scality Object Storage, we hope to reduce the number of servers for our email platform to just a fifth of its previous size. This will result in massive cost-savings in up-keep across hardware, electricity and cooling” commented Dan Shain, technical director, Rackspace. “We are planning to do this without any disruption in service and support while improving the reliability and scalability of our email service.”

In addition, Dovecot Pro saves up to 50 % of the storage capacity needed for full text indexes compared with other open source full text indexes. Dovecot Pro’s optimized mailbox format is tuned for fast indexing and searching in order to retrieve the wanted emails in the most efficient way possible.

In 2015, Dovecot became a part of the Open-Xchange family with a shared and deep-rooted commitment to an open source model for delivering trusted applications. Together their aim is to becoming the world’s leading provider of open source cloud software for ISP’s, telcos, cable companies and cloud providers.

About Open-Xchange

OX is the world’s leading provider of open source software-as-a-service solutions for hosting, service provider and telecommunications companies. Deployed by the most innovative businesses worldwide, the OX flagship product – OX App Suite – gives people the freedom to work in ways that make them more productive and secure.

Since 2005, Open-Xchange has partnered with many of the largest providers in the world to deliver email, messaging and collaboration solutions that include secure storage, file and document management, and best-in-class IMAP and DNS management.

Today, with headquarters in Germany (Olpe and Nuremberg), and offices across Europe, the United States and in APAC, Open-Xchange is championing an open Internet that empowers business and private individuals alike. Learn more about the OX experience at:

About Rackspace

Rackspace (NYSE: RAX), the #1 managed cloud company, helps businesses tap the power of cloud computing without the complexity and cost of managing it on their own. Rackspace engineers deliver specialized expertise, easy-to-use tools, and Fanatical Support® for leading technologies developed by AWS, Google, Microsoft, openstack, vmware and others. The company serves approximately 300,000 businesses worldwide, including two-thirds of the FORTUNE 100. Rackspace was named a leader in the 2015 Gartner Magic Quadrant for Cloud-Enabled Managed Hosting, and has been honored by Fortune, Forbes, and others as one of the best companies to work for. Learn more at

About Scality

Scality® storage propels companies to unify data management no matter where data lives — from edge to core to cloud. Our market-leading file and object storage software protects data on-premises and in hybrid and multi-cloud environments. With RING and ARTESCA, Scality’s approach to managing data across the enterprise accelerates business insight for sound decision-making and maximum return on investment. To compete in a data-driven economy, IT leaders and application developers trust Scality to build sustainable, adaptable solutions. Scality is recognized as a leader by Gartner and IDC. Follow us @scality and LinkedIn. Visit, or subscribe to our company blog.

Director of Corporate Communications

Julie Greene