Portmux is a Dropbox to Google Drive migration service that moves your files, Team Folders, shared links, and Dropbox Paper docs into Google Drive and Shared Drives with the sharing scope and folder structure your teams expect.
Dropbox-to-Google-Drive is usually a Microsoft-or-Google consolidation move. The file transfer is straightforward (both are object stores). The harder pieces are Team Folder to Shared Drive mapping (similar concepts, different access models), Dropbox Paper conversion (no exact Google Docs equivalent for some Paper features), and shared-link continuity (links need to keep resolving to maintain external collaboration).
Files in user personal Dropbox migrated to user My Drive with original folder hierarchy, last-modified timestamp, and ownership.
Each Team Folder becomes a Google Shared Drive with the same membership translated to Shared Drive members and equivalent access roles.
Shared folders (added by individual users to their Dropbox) re-shared in Google Drive with the same external/internal participants and access levels.
Paper docs converted to Google Docs preserving text, comments, embedded images, and tables; Paper-specific features (timeline, to-do lists with assignees) become Google Docs comments with assignees where possible.
Dropbox permissions (Edit, View, Comment) translated to Google Drive permissions (Editor, Viewer, Commenter) at file/folder level with original grant timestamps preserved.
Dropbox shared links re-created as Google Drive sharing links with equivalent access scope (Anyone with link, Restricted, Domain) and link-level permission.
Dropbox file version history (180 days standard, longer on Business plans) migrated as Google Drive version history with original modification timestamps.
Dropbox file comments migrated as Google Drive file comments on the destination file with original commenter and timestamp.
Online-only Dropbox files materialized to full content during migration so they exist in Google Drive without referring back to the Dropbox cache.
Dropbox Showcase pages exported as PDFs and stored in the destination Drive folder with associated source files; Showcase isn't recreated as a native Google feature.
External users shared on Dropbox files are re-invited via Google Drive sharing on the destination files; we deliver an external-collaborator audit so your team can communicate the change.
Active Dropbox File Requests (collect-from-external links) replaced with Google Drive folder upload links; File Request submission history archived as a CSV.
We connect to Dropbox via OAuth as a Team Admin, which gives access to every user's Dropbox, all Team Folders, and Team-wide audit metadata. Google Workspace access is provisioned via a Service Account with domain-wide delegation. Within 72 hours you see total file count, total bytes, Team Folder inventory, and a Paper doc inventory ready for conversion review.
Mapping covers Team Folder → Shared Drive correspondence (typically 1:1), Paper doc conversion strategy (default: convert to Google Docs, keep Paper as PDF backup), shared-link continuity plan (Dropbox links → Google Drive links, with optional URL forwarding via your domain), and external collaborator re-invitation plan.
Migration runs in waves: personal Dropbox first (per-user My Drive), then Team Folders (one Shared Drive per Team Folder) prioritized by team activity. Each wave includes pre-migration communication, in-migration dashboards, and validation reports. After cutover, Dropbox is set to read-only for 30 days, then access revoked.
Every migration has its own gotchas. Here's what we plan for on this specific path.
Paper docs convert to Google Docs but some Paper-specific features don't have Google Docs equivalents: timeline view with assignee dates, to-do lists with assigned users, embedded interactive elements. We convert text content and comments cleanly; specialized features become Google Docs comments or are pre-flagged for manual recreation.
If external partners have Dropbox shared links bookmarked or embedded in their workflows, those links break when Dropbox is decommissioned. We deliver an external-link audit and either: (1) maintain Dropbox in read-only mode for 30 days with an automated link-redirect message, (2) coordinate Google Drive link distribution to known external partners, or (3) both.
Dropbox Smart Sync stores some files online-only on user devices; the actual file content has to be downloaded during migration. For users with TBs of online-only files, this can require staged migration to avoid bandwidth saturation. We schedule materialization waves accordingly.
Dropbox Business plans typically include unlimited storage; Google Workspace storage scales with user count and tier. Pre-migration audit identifies storage hot spots (users with >1TB, departed users with active Dropboxes, Team Folders with bloated version histories) and we recommend cleanup before migration to fit within Google Workspace quotas cleanly.
Single-system migrations like Dropbox to Google Drive run as Track A engagements: one source, one destination, up to 1M records, 4–6 weeks. Final price depends on object volume, custom field count, and integrations, scoped on a 20-minute call before any commitment. See full pricing →
Tell us what's in the source, where it's going, SaaS or custom, and when you need to be live. You'll walk away with a scoped quote, a named engineer, and a go-live date.