MailStore
MailStore Software GmbH, a Viersen-based OpenText subsidiary founded in 2006, sells on-premises and cloud email archiving software to SMBs and MSPs across 100+ countries, combining perpetual licenses with a subscription Cloud product and a deep partner channel.
- Company typePrivate
- Founded2006
- HeadquartersViersen, Germany
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What MailStore does
MailStore Software GmbH is a German email archiving specialist headquartered in Viersen, founded in 2006 and operating as a wholly-owned subsidiary of OpenText. The company builds on-premises and cloud email archiving software for small and medium-sized businesses (5 to 2,000 users), as well as a Service Provider Edition for managed service providers and a free consumer product (MailStore Home). Its technical foundation is an integrated Firebird-based storage engine that requires no external database, combined with SHA hash and AES256 tamper-proof encryption, journaling, full-text indexing, and de-duplication that delivers up to 70% storage savings. The product supports virtually all major email systems including Microsoft 365 (now via Graph API), Microsoft Exchange Server, Google Workspace, MDaemon, Kerio Connect, IceWarp, and IMAP/POP3 servers, and is certified under GDPR and IDW PS 880.
MailStore generates revenue through a hybrid model: perpetual MailStore Server licenses (Starter Kit from $259), an annual Update & Support subscription (Standard bundled, Premium as an upsell), a monthly-subscription MailStore Cloud service (5-500 users) launched in October 2025, and MailStore SPE licensing for MSPs that host the archive on their own infrastructure. The company combines direct sales (online store, phone, email, free 30-day trials) with an extensive partner channel of value-added distributors (notably ELOVADE for DACH, VAD of the Year for 11 consecutive years), regional Cloud partners (Zen Software in the UK), and an MCAS-certified reseller and MSP network that the company claims covers more than 100 countries and 100,000 corporate customers. Customer-reported satisfaction is high (97.9% overall), and the company maintains a recurring release cadence (Versions 24.2, 24.4, 26.2) plus ongoing certifications as primary commercial levers rather than significant direct sales hiring or M&A.
MailStore firmographics
Firmographics- Name
- MailStore
- Legal name
- MailStore Software GmbH
- Website
- http://mailstore.com
- Company type
- Private
- Founded year
- 2006
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- MailStore Software GmbH, a Viersen-based OpenText subsidiary founded in 2006, sells on-premises and cloud email archiving software to SMBs and MSPs across 100+ countries, combining perpetual licenses with a subscription Cloud product and a deep partner channel.
- Ownership category
- akta.pro rank
MailStore industry classification
Industry- Product category
- Email Archiving Software
- NAICS
- Software Publishers (5132)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Email Archiving, eDiscovery & Compliance (HDADAKAE)
Keywords
Where MailStore is headquartered
LocationHeadquarters
- HQ city
- Viersen
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
MailStore business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- MailStore Server Perpetual Licenses: One-time perpetual license purchase for MailStore Server with pricing based on number of users. Starter Kit for up to 5 users starts at $259.00. Additional user licenses available in packs. Includes 12 months of Standard Update & Support Service.
- MailStore Cloud Subscription: Monthly subscription-based cloud-native email archiving service with flexible scaling. User licenses and storage billed monthly with automatic renewal. No hardware or software maintenance costs. Available for 5-500 users per organization.
- MailStore Service Provider Edition (SPE): MSPs host email archiving 'as a service' on their own infrastructure with branding options, allowing them to resell archiving services to their customers.
- Update & Support Service: Optional premium support contracts available in 1, 2, or 3-year terms. Standard support included; Premium adds phone support, priority handling, and access to unreleased hotfix versions.
- MailStore Home (Free): Free email archiving software for home and private users, generating goodwill and potential future business conversions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Multi-year contract | Starter Kit - MailStore Server (up to 5 users) |
| Subscription | Annual | Standard Update & Support Service |
| Subscription | Annual | Premium Update & Support Service |
| Subscription | Monthly | MailStore Cloud (5-500 users) |
| Freemium | Pay-as-you-go | MailStore Home |
| Freemium | Pay-as-you-go | MailStore Gateway |
Go-to-market motion2 records
Distribution channels7 records
Marketing channels8 records
MailStore product offering
Product offeringCore offering
MailStore develops and sells email archiving software that captures, indexes, secures, and enables rapid retrieval of business email for compliance, legal hold, and mailbox-management purposes. It delivers this as MailStore Server (on-premises perpetual license for 5-2,000 users), MailStore Cloud (subscription SaaS for 5-500 users), and MailStore Service Provider Edition (SPE) for MSPs to offer archiving as a managed service, alongside the free MailStore Home product for private users.
Product overview
MailStore offers a portfolio of email archiving solutions for different market segments. The core offerings include MailStore Server (on-premises software for SMBs with 5-2,000 users), MailStore Cloud (cloud-native SaaS for SMBs with 5-500 users), and MailStore Service Provider Edition (SPE for MSPs offering email archiving as a service). MailStore Home provides free email archiving for private users. Supplementary tools include MailStore Gateway (journaling and proxy functionality for cloud services) and the MailStore Outlook Add-in/Web Access for archive access. The products support virtually all major email systems including Microsoft 365, Microsoft Exchange Server, Google Workspace, and IMAP/POP3-compatible servers.
Differentiator
Problem solved
Functional benefit
Brands
- MailStore Server: Email archiving solution for small and medium-sized businesses (SMBs)
- MailStore Cloud
- MailStore Service Provider Edition (SPE)
- MailStore Home
- MailStore Gateway
Products and services
- MailStore Server On-premises email archiving software for small and medium-sized businesses with 5 to 2,000 users. Available as a perpetual license starting at $259.00 for a 5-user Starter Kit, it supports Microsoft 365, Exchange Server, Google Workspace, and IMAP/POP3 servers, and includes compliance features such as retention policies, legal hold, full-text search, and tamper-proof storage.
- MailStore Cloud Cloud-native email archiving service for small and medium-sized businesses with 5 to 500 users, delivered as a monthly subscription. Hosted in an ISO-certified German data center with 99.9% availability SLA, MailStore Cloud requires no hardware investment, includes GDPR and IDW PS 880 certification, and supports Microsoft 365 and Google Workspace via APIs.
- MailStore Service Provider Edition (SPE) Email archiving product for Managed Service Providers that lets them deliver archiving as a hosted, multi-tenant managed service to their own SMB and mid-market customers. MSPs run SPE on their own infrastructure with branding options and resell to end customers.
- MailStore Home Free email archiving software for individual home and private users. Archives personal email from sources including Gmail, Yahoo, Outlook.com, POP3/IMAP accounts, and Microsoft Outlook, used by millions of private users globally.
- MailStore Gateway Free complementary tool providing journaling and proxy functionality for archiving cloud-based email services such as Microsoft 365. Distributed as a free add-on program for MailStore Server and SPE users to enable reliable cloud email capture.
Quantifiable outcome
- Up to 70% storage space savings through de-duplication and compression
- +3 more outcomes
Companies that use MailStore
Customer profileNamed customers24 records
Segments5 records
Ideal customer profiles3 records
MailStore technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration6 records
Feature10 records
MailStore partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered regional, core and minor.
- MicrodiumregionalMicrodium from Malaysia named MailStore Partner of the Year 2025. Has been part of MailStore's international partner network for approximately 14 years, demonstrating long-term partnership commitment in the Asia-Pacific region.
- ELOVADEcoreELOVADE named MailStore VAD of the Year for the eleventh consecutive year. Primary distribution partner for DACH region (Germany, Austria, Switzerland) handling MailStore Cloud and other products. Represents exceptional consistency and depth of partnership.
- Zen SoftwareregionalZen Software named first MailStore Cloud Partner of the Year. Primary UK partner for MailStore Cloud distribution, representing expansion of cloud partnership model in the British market.
- OpenTextcoreMailStore is a subsidiary of OpenText, a global enterprise information management company. OpenText provides the infrastructure for MailStore Cloud, hosting the service in ISO-certified German data centers. This parent-subsidiary relationship provides capital backing, operational resources, and integration with OpenText's broader enterprise software portfolio.
- DATEVminorDATEV Premium Partner status. DATEV is a major German software provider for tax consultants and accountants. Partnership enables integration and co-marketing opportunities with the German professional services market.
- Sistem PointminorItalian partner success story. Reseller using MailStore Server to solve customer email archiving problems while finding time for new valuable offerings. Demonstrates partner enablement benefits.
- CyberspaceminorIndian partner success story using MailStore SPE (Service Provider Edition). Expects revenue growth by selling additional services and recommends all MSPs should have email archiving in their service basket.
- Global SPminorFrench partner success story using MailStore SPE. Praises simple and intuitive archiving solution with web interface accessibility from any browser.
Scale indicators9 records
Recent moves6 records
Expansion highlights6 records
MailStore competitors and assessment
Company assessmentMarket position
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
MailStore social profiles
Digital presenceMailStore compliance and trust
Trust signalCompliance4 records
MailStore financial estimates
Financial estimateRevenue estimate
Valuation estimate
MailStore leadership team
Management profileNumber of profiles
Profiles2 records
MailStore funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
MailStore M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about MailStore
What does MailStore do?
MailStore develops and sells email archiving software that captures, indexes, secures, and enables rapid retrieval of business email for compliance, legal hold, and mailbox-management purposes. It delivers this as MailStore Server (on-premises perpetual license for 5-2,000 users), MailStore Cloud (subscription SaaS for 5-500 users), and MailStore Service Provider Edition (SPE) for MSPs to offer archiving as a managed service, alongside the free MailStore Home product for private users.
Is MailStore a public or private company?
MailStore is a private company. It is classified as corporate owned and is currently operating.
When was MailStore founded?
MailStore was founded in 2006. It employs 51 to 100 people.
Where is MailStore based?
MailStore is headquartered in Viersen, Germany, in the Europe region.
How does MailStore make money?
Five revenue lines are on record. MailStore Server Perpetual Licenses are the primary driver. The others are mailStore Cloud Subscription, mailStore Service Provider Edition (SPE), update & Support Service and mailStore Home (Free).
Does MailStore have an API?
No public API is recorded for MailStore.
What industry is MailStore in?
MailStore's product category is Email Archiving Software. Its primary akta.pro industry code is HDADAKAE, Email Archiving, eDiscovery & Compliance. Its NAICS code is 5132 and its SIC code is 7372.