MailStore
MailStore is a German email archiving software brand, a subsidiary of OpenText, offering archiving solutions for businesses and home users.
Last updated September 15, 2026
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Overview
MailStore is an email archiving software brand based in Viersen, Germany, and a subsidiary of OpenText. It has offered email archiving technology since 2006 and serves over 100,000 corporate customers in more than 100 countries, as well as private users through its freeware MailStore Home. Its solutions address email compliance, eDiscovery, data loss prevention, mailbox quotas, and server load, and are certified according to the EU's GDPR.
History
MailStore has been offering email archiving technology since 2006. In 2014, MailStore was acquired by Carbonite Inc., a data-protection company headquartered in Boston, MA (USA). Since December 2019, MailStore has been part of the Cybersecurity division of Canadian software vendor OpenText (NASDAQ: OTEX) (TSX: OTEX). MailStore is based in Viersen near Düsseldorf, Germany, with a team of about 50 employees.
Products and positioning
The standard in email archiving; a global leader in email archiving solutions made in Germany.
MailStore Server
Email archiving software for small and medium-sized businesses (SMBs).
MailStore Cloud
Cloud-native email archiving as a service for SMBs with up to 500 users.
MailStore SPE
Service Provider Edition for MSPs to offer email archiving as a service on their own infrastructure.
MailStore Home
Freeware for home users to archive personal emails from almost any email source.
MailStore Gateway
Supplementary tool providing free mail server and proxy functionality to archive cloud-based services such as Microsoft 365.
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