Zoho Mail From $0.08/mo · Free plan 9.5 Visit SOGo
sogo.nu
Spec sheet
- Product
- SOGo is an open-source groupware server for sharing organizational email, calendars, and address books.Read 12 Oct 2026 · sogo.nu
- Deployment
- SOGo is self-hosted software with packages for Linux distributions and a Zero Effort Groupware virtual appliance for testing.Read 12 Oct 2026 · sogo.nu
- Free plan
- YesRead 21 Sep 2026 · sogo.nu
- Security
- Listed security features include authenticator-app two-factor authentication, password policies, S/MIME signing and encryption, and single sign-on via CAS, WebAuth, or Kerberos.Read 12 Oct 2026 · sogo.nu
- Support
- Community help is available through a mailing list, while Alinto offers commercial support packages and documentation is provided online.Read 12 Oct 2026 · sogo.nu
- App coverage
- allRead 21 Sep 2026 · sogo.nu
- Backends
- SOGo can reuse existing IMAP, SMTP, database, and LDAP services, including Active Directory, OpenLDAP, MySQL, and PostgreSQL.Read 12 Oct 2026 · sogo.nu
- Calendar tools
- YesRead 21 Sep 2026 · sogo.nu
- Client integrations
- The maker lists Mozilla Thunderbird, Microsoft Outlook, Apple Calendar and Contacts, and ActiveSync-compatible devices as supported clients.Read 12 Oct 2026 · sogo.nu
- Collaboration
- Users can share mail, calendars, and address books with per-person or per-group rights, and delegate mailbox access or invitations.Read 12 Oct 2026 · sogo.nu
- Current release
- The download page lists SOGo 5.12.11, released September 14, 2026.Read 12 Oct 2026 · sogo.nu
- Mail tools
- Features include multiple IMAP accounts, server-side mail filtering, custom identities, forwarding, and auto-replies.Read 12 Oct 2026 · sogo.nu
- Open protocols
- SOGo uses CalDAV, CardDAV, IMAP, SMTP, and Microsoft Exchange ActiveSync to connect clients and synchronize information.Read 12 Oct 2026 · sogo.nu
- Scale
- The maker says SOGo can scale from a handful to hundreds of thousands of users through a horizontally expandable architecture.Read 12 Oct 2026 · sogo.nu
- Support limits
- Premium support excludes component installation, custom development, preventive monitoring, training, and documentation, and it does not commit to issue resolution times.Read 12 Oct 2026 · sogo.nu
- Web interface
- SOGo provides an AJAX-based web interface for accessing messaging and calendaring data.Read 12 Oct 2026 · sogo.nu
Plans and prices
Community support Free Mailing list · FAQ · Documentation · No official release access Read 12 Oct 2026 · sogo.nu
SOGo Free Free and open-source groupware server · GNU GPL/LGPL v2 and above Read 12 Oct 2026 · sogo.nu
Sponsorship $500 a year One-year prepaid contract Release access · Nightly builds · Support via mailing list, FAQ, and documentation · Unused tickets are not extended Read 12 Oct 2026 · sogo.nu
Silver $1,500 a year One-year prepaid contract 10 incidents · 4-business-hour acknowledgement · Release access · Bug fixes for current version · Portal tickets and live Visio Read 12 Oct 2026 · sogo.nu
Gold $5,000 a year One-year prepaid contract 30 incidents · 2-hour acknowledgement · 4 consulting hours · Priority bug fixes · Portal tickets and live Visio Read 12 Oct 2026 · sogo.nu
Platinum $7,500 a year One-year prepaid contract 50 incidents · 2-hour acknowledgement · 6 consulting hours · Priority bug fixes · Portal tickets and live Visio Read 12 Oct 2026 · sogo.nu
Where Specifiction places it
- Email clients#22 of 1428.6
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