ContactOffice vs Dropbox Paper

ContactOffice brings email, calendars, contacts, document storage, and collaboration tools into an online workspace. Its messaging center can consolidate POP3, IMAP, Gmail, and Yahoo addresses, and supports POP3 or IMAP software access and SMTP relay. Calendar functions include shared agendas, meeting invitations, polls, reminders, and CalDAV synchronization. Contacts can hold photos, comments, and access maps, with CSV and vCard imports and CardDAV synchronization. The documents tool supports shared files, collaborative editing, PDF conversion, and WebDAV access. The service supports Android, iOS, Linux, macOS, Windows, and web access, plus 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, transfers use TLS/SSL, and two-factor authentication is available. The free plan includes 500 MB each for mailbox and documents, 200 address book entries, and no monthly SMS allowance. Paid plans begin at €5 a month, billed for six months.

Dropbox Paper is a collaborative document tool for teams, built around documents with timelines, to-dos, and tables. To-dos can be assigned and given due dates, then viewed in a Things to do sidebar. Timelines collect deadlines, files, and to-dos and can be viewed by week, month, quarter, or year; on mobile, timelines are read-only. Paper is free, and a Dropbox account with sign-in is required to create or access documents. There is no limit on the number of Paper documents in an account, and each uses less than 100 bytes of Dropbox storage. The separate Dropbox Paper mobile app was discontinued on October 9, 2025, while Paper remains available on the web. In the Dropbox desktop app, Paper documents open on dropbox.com unless exported as PDF, DOCX, or Markdown. Paper supports real-time collaboration, track changes, and offline editing. Some users can connect Paper with Google or Outlook calendars to link documents to events and make meeting notes. Documents are encrypted at rest with 256-bit AES and in transit with SSL/TLS.