OneDrive is already on most Windows computers, so it's the obvious way to share a big file: right-click, Share, copy the link. Outlook does the same automatically when an attachment is too large. It works — until your 5 GB of free storage is full, the upload takes all afternoon, or the recipient gets ZIP files instead of your folder. This StrongFolder vs OneDrive comparison explains which tool fits which job, including when OneDrive is clearly the better choice.
How do StrongFolder and OneDrive compare?
OneDrive and Outlook.com facts as of 5 November 2026, from Microsoft's own support pages (sources at the end).
| StrongFolder | OneDrive (free) | |
|---|---|---|
| What it is | Direct file transfer (P2P, WebRTC) | Cloud storage with sharing |
| Free capacity | No size limit set by the service | 5 GB, shared with Outlook.com attachments |
| Largest single file | No limit set by the service | 250 GB |
| Upload before sharing | None — download starts at once | Full upload first |
| How long files are available | While you keep sharing | Until you delete them |
| Account to send | No | Microsoft account |
| Account to receive | No | No, with an "Anyone with the link" link |
| Folders for the recipient | Same folder tree, no ZIP | ZIP: 10 GB per .zip, 20 GB overall, 10,000 files |
| Co-editing in Office apps | No — it's a transfer tool | Yes |
| Sender online during download | Yes | No |
| Files stored on a server | Never (metadata only) | Yes, in your OneDrive |
What is the main difference between StrongFolder and OneDrive?
OneDrive stores; StrongFolder sends.
OneDrive is a place where files live. You upload or sync them, they count against your storage, and anyone you share them with can open, co-edit in Office or download them for as long as you keep them. Microsoft says recipients of an "Anyone with the link" link don't need a Microsoft account; work and school organizations can turn that option off.
StrongFolder is a pipe. It moves files or folders from your device to another device and keeps nothing. Files are never uploaded to or stored on a StrongFolder server. To create the link, the service keeps transfer metadata: file and folder names, sizes and the number of files. The cost of that model: The sender's browser tab must stay open and online until the recipient finishes downloading — files come from the sender's device, not from a server. Read more in P2P vs cloud file transfer.
What happens when an Outlook attachment is too large?
Outlook.com's sending limits page lists a 25 MB limit for attachments. For anything bigger, Microsoft suggests attaching the file as a OneDrive link: choose Attach → Upload and share, and the file goes to OneDrive first. Linked files don't count towards the e-mail size limit, but Microsoft lists a 2 GB limit for them. Those uploads land in your OneDrive and use your storage. See email attachment size limits for other mail services.
With StrongFolder you skip the upload: open the app, choose the file or folder, and paste the link into your e-mail. The recipient clicks it and downloads directly from your browser. It's a good fit for "the attachment is too large" moments when the recipient is ready now — and a poor fit when they'll open the e-mail tomorrow, because your tab must still be open.
What happens when a file is bigger than my free OneDrive storage?
You can't upload it. Microsoft's storage quota page says the free plan is 5 GB, and that cloud storage includes your e-mail attachments as well as files and photos in OneDrive. When you're over the quota, Microsoft says you can't upload, edit or sync new files — and Outlook.com stops sending and receiving e-mail until you free up space.
StrongFolder has no storage to fill, so your quota doesn't matter. A 120 GB folder of camera footage can go straight from your disk to the editor's disk. The practical limits are the recipient's free disk space, your upload speed and both devices staying online. See how to send large files, send files without uploading and limits.
Does the recipient get the folder or a ZIP?
From OneDrive in a browser, a ZIP. Microsoft's download help says that selecting several items or a folder downloads a .zip file, with limits of 10 GB per .zip, 20 GB overall and 10,000 files. A project folder above those limits has to be downloaded in several smaller selections, and the ZIPs extracted afterwards.
StrongFolder sends the folder as a folder. The recipient picks a destination and the same subfolders and file names appear there, written file by file. Saving a whole folder with its structure uses the File System Access API: Chrome, Edge, Opera and other Chromium browsers on a computer. Other browsers can download the files one by one or as a ZIP. Details in how to send a folder without zipping.
When is OneDrive the better choice?
Choose OneDrive when:
- you work in Microsoft 365 — co-editing Word, Excel and PowerPoint files in place;
- people will come back to the files over weeks, or need version history;
- you can't stay online while they download, or they'll download at different times;
- the files are already in OneDrive — sharing a link takes seconds;
- your organization manages sharing — work and school accounts have admin controls.
For documents a team edits for months, OneDrive is the right tool, and StrongFolder doesn't try to replace it.
When is StrongFolder the better choice?
Choose StrongFolder when:
- the file or folder is bigger than your free OneDrive storage, or would fill it;
- the folder is too big for ZIP downloads — more than 20 GB or 10,000 files;
- it's a one-off delivery — final footage, a photo shoot, a build, a dataset;
- you'd rather not upload a copy to anyone's cloud;
- neither side wants to sign in — no account is needed;
- several people need it now — One link can be opened by several recipients; each downloads directly from the sender.
Keep your computer awake and the tab open until everyone finishes.
Free · in your browser · no sign-up
Is StrongFolder a good OneDrive alternative for large files?
For sending, yes; for storing, no. Keep working files in OneDrive and use StrongFolder for heavy one-time transfers that would eat your 5 GB or take hours to upload. The Chrome extension puts StrongFolder in your browser toolbar for one-click sharing. The same logic applies to other drives — see StrongFolder vs Google Drive and StrongFolder vs Dropbox.
Summary
OneDrive is storage with sharing: best for Microsoft 365 collaboration and for files people will open over time, limited on the free plan to 5 GB shared with Outlook.com attachments, with folders downloaded as ZIP. StrongFolder is a direct transfer: no upload, no storage, no size limit set by the service, folders kept as folders — as long as your tab stays open. Use OneDrive to keep files, StrongFolder to deliver big ones.
Sources
Checked on 5 November 2026: Microsoft storage quotas · Restrictions and limitations in OneDrive and SharePoint · Download files and folders from OneDrive or SharePoint · Sending limits in Outlook.com · Unable to attach files in Outlook.com · Unable to share OneDrive files · External or guest sharing in OneDrive