ContactOffice
ContactOffice combines email, calendars, contacts, document storage, and collaboration in an online workspace.
What ContactOffice is
ContactOffice combines email, calendars, contacts, document storage, and collaboration in an online workspace. Its messaging center can consolidate POP3, IMAP, Gmail, and Yahoo accounts, with POP3 or IMAP software access and SMTP relay. Calendar tools include shared agendas, meeting invitations, polls, reminders, and CalDAV synchronization. Contacts can hold photos, comments, and other details, with CSV and vCard imports and CardDAV synchronization. The document area supports shared files, collaborative editing, PDF conversion, and WebDAV access. ContactOffice works on Android, iOS, Linux, macOS, Windows, and the web, and supports mobile synchronization with iPhone, iPad, Android, and other Exchange-capable devices. Global synchronization is limited to paid subscriptions. The maker says data and backups are hosted in Europe and transfers use TLS/SSL encryption; two-factor authentication is also listed. Each item has individual access rights, with private data accessible only to its account owner by default. The free plan includes 500 MB for mail and documents and 200 address-book entries.
Good
- Combines email, calendars, contacts, and documents
- Supports CalDAV and CardDAV synchronization
- Includes collaborative editing and PDF conversion
- Data and backups are hosted in Europe, according to the maker
- Lists two-factor authentication
Watch out
- Free mailbox and document storage are each 500 MB
- Free address book is limited to 200 entries
- Global synchronization requires a paid subscription
Who it suits
It suits individuals seeking a combined email, calendar, contacts, and document workspace, as well as work groups using shared tools. Users needing global synchronization should note that it is limited to paid subscriptions.
Verdict
ContactOffice brings several communication and collaboration tools into one workspace, with integrations and synchronization options. The free plan has capacity limits, and global synchronization is reserved for paid subscriptions.
Plans and prices
From ContactOffice's own pricing page, checked 29 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 500 MB mailbox · 500 MB documents · 200 address book entries · 0 SMS/month |
| Light | €5 a month | 5 GB mailbox · 3 GB documents · 2.000 address book entries · 10 SMS/month · 6 months |
| Regular | €10 a month | 10 GB mailbox · 4 GB documents · 3.000 address book entries · 20 SMS/month · 3 months |
| Advanced | €20 a month | 15 GB mailbox · 5 GB documents · 5.000 address book entries · 30 SMS/month · 3 months |
The facts
Each one read from ContactOffice's own pages, with the date it was checked.
What it does
- Access controls
- The maker says each item has individual access rights and private data is accessible only to the account owner by default.checked 29 Sep 2026
- Calendar
- Calendar features include shared agendas, meeting invitations, polls, reminders, and CalDAV synchronization.checked 29 Sep 2026
- Contacts
- Contacts can include IM addresses, photos, comments, and access maps, with CSV and vCard import and CardDAV synchronization.checked 29 Sep 2026
- Documents
- The documents tool supports shared files, collaborative editing, PDF conversion, and WebDAV access.checked 29 Sep 2026
- The messaging center can consolidate email addresses including POP3, IMAP, Gmail, and Yahoo, and supports POP3/IMAP software access and SMTP relay.checked 29 Sep 2026
- Exports
- The maker says users can export all their data in standard formats when ending use of the service.checked 29 Sep 2026
- Integrations
- The maker lists Outlook, Apple Mail, Thunderbird, Gmail, Yahoo, Dropbox, Google Drive, WebDAV, SMB/CIFS, CalDAV, and CardDAV compatibility or access.checked 29 Sep 2026
- Intended users
- The maker describes the individual version as a personal solution and its group version as a solution for work groups.checked 29 Sep 2026
- Mobile
- ContactOffice supports mobile synchronization with iPhone, iPad, Android, and other Exchange-capable devices, while global synchronization is limited to paid subscriptions.checked 29 Sep 2026
- Product
- ContactOffice combines email, calendars, contacts, document storage, and collaboration tools in an online workspace.checked 29 Sep 2026
- Security
- The maker says data and backups are hosted exclusively in Europe and that data transfers use TLS/SSL encryption; it also lists two-factor authentication.checked 29 Sep 2026
- Service level
- The security page lists a 99,8% service level for accessibility and describes continuous monitoring and backup servers.checked 29 Sep 2026
- Support
- The company page lists commercial and product requests and technical support, with a Brussels telephone number.checked 29 Sep 2026
The company
- Headquarters
- Brussels, Belgiumchecked 28 Sep 2026
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