SOGo
SOGo: A flexible self-hosted suite for shared email, calendars, contacts, and tasks. Ranked #49 of 142 in Email Clients by our editors (4.6/10); pricing: Free plan; best for self-hosters needing shared mail and calendars.
At a glance
- Editor score4.6 / 10
- PricingFree plan
- Best forSelf-hosters needing shared mail and calendars
- Free planYes
- Paid fromFree
- App coverageAll
- Facts checked21 Sep 2026
Where it wins
- Free, open-source deployment with self-hosted control
- Shared calendars, contacts, tasks, and permission-based resources
- Web, desktop, mobile, and standards-based synchronization
Where it doesn't
- Self-hosted deployments require infrastructure and administration
- Outlook access requires a synchronization plugin
- Premium support packages are separate from the free product
Our verdict on SOGo
SOGo is an open-source groupware server for organizations and communities that need shared email, calendars, contacts, and tasks. Its webmail interface works with existing IMAP and SMTP services, while shared calendars, address books, reminders, recurring events, and permission-based resource sharing support collaborative work. The platform suits teams that want control over deployment and data, particularly self-hosters managing their own mail, directory, and database services.
The main strength is ecosystem coverage. SOGo supports web access alongside Mozilla Thunderbird, Microsoft Outlook through a synchronization plugin, Apple Calendar, Apple Contacts, and ActiveSync-compatible mobile devices. CalDAV, CardDAV, GroupDAV, IMAP, and Microsoft ActiveSync extend synchronization across email, contacts, events, and tasks. LDAP and MariaDB, MySQL, PostgreSQL, and Oracle support can also fit existing directory and database environments. Two-factor authentication adds an account-security control, while filtering and auto-reply features cover routine mail administration.
SOGo itself is free and open source, while Alinto separately lists paid premium support packages that include access to official release repositories. That model keeps the core product available without a per-user product subscription, but it places deployment, administration, and ongoing operations with the organization. SOGo is a strong choice for teams that value open standards, shared groupware, and self-hosted control. Organizations seeking a fully managed service, or Outlook users who want native access without a synchronization plugin, should consider a different fit.
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SOGo pricing
SOGo fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| App coverage | All |
| Account limit | Not verified |
| Unified inbox | Not verified |
| Offline access | Not verified |
| Scheduled sending | Not verified |
| Calendar tools | Yes |
| Deployment | Self-hosted, Desktop, Mobile |
| Platforms | Web, Windows, macOS, Linux, iOS, Android |
| Compliance & security | 2FA |
| Support | Email, Tickets, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 10 integrations: Mozilla Thunderbird, Microsoft Outlook, Apple Calendar, Apple Contacts, IMAP, SMTP … |
| Pricing | Free plan |
| Website | sogo.nu |
| Facts checked | 21 Sep 2026 |
SOGo integrations
SOGo lists 10 integrations on its own site.
- Mozilla Thunderbird
- Microsoft Outlook
- Apple Calendar
- Apple Contacts
- IMAP
- SMTP
- LDAP
- Microsoft ActiveSync
- CalDAV
- CardDAV
Alternatives to SOGo
- Mozilla ThunderbirdA capable free client for multi-account email, offline access, and desktop productivity tools.9.4
- Zoho MailA flexible hosted email service with free access, migration tools, and Zoho collaboration options.9.2
- Apple MailA capable Apple-focused email client with unified inboxes, scheduling, privacy controls, and AI assistance.9.1
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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