DragIn1
Drag an attachment out of New Outlook and nothing happens. DragIn1 fixes that.
Drop the attachment on DragIn1, then drag it wherever you actually wanted it. Works from New Outlook, Teams, Gmail, SharePoint and OneDrive, into anything at all.
Downloads come from GitHub Releases. Nothing is hosted on this domain, and every release publishes a SHA256.
Why this happens
It is not your computer
When you drag an attachment, the app you are dragging from has to hand a real file to the app you are dragging to. Classic Outlook does that instantly, because the file is already on your disk.
New Outlook cannot. The attachment is still sitting on a server when you press the mouse button, and downloading it takes a moment that a drag is not allowed to wait for. So instead of handing over a file, it offers one, and waits to be asked for it in a particular way.
Almost no Windows application knows to ask that way. So the offer is never taken up, the file never arrives, and nobody reports an error. It looks like your email is broken. It is really two pieces of software talking past each other.
That is also why it fails identically from Teams, Gmail, SharePoint and OneDrive. They are all built the same way underneath.
How it works
One stop on the way
What happens today
New Outlook
Chromium
Anywhere else
No file
The file is offered, then never handed over. No error appears, which is why it feels like the email client is broken.
What happens with DragIn1
New Outlook
Chromium
DragIn1
Shelf
Anywhere else
Real file
DragIn1 asks the way the handshake requires, saves the real file, then offers it again as an ordinary Windows file drag. The destination never has to know DragIn1 exists.
Drop it on DragIn1
Drag the attachment out of New Outlook and onto the small DragIn1 window instead of your final destination.
DragIn1 saves the real file
It asks for the file the specific way the source is waiting to be asked, then writes the actual bytes to your disk.
Drag it anywhere
Drag it out of DragIn1 into a folder, an upload box, or any app. It is an ordinary file now, so everything accepts it.
Yes, that is two gestures instead of one. Making the desktop app a single drag would mean injecting code inside Outlook and Chrome, which trips antivirus and breaks on every Outlook update. DragIn1 stays outside every other process. One extra gesture, and it cannot break your email client.
One exception worth knowing: if the place you are dropping onto is an upload box on a web page, the Chrome extension does make it a single motion. It receives the captured file from the helper and hands it straight to the page's uploader, so you drag from Outlook to the upload box and nothing else. The two-step shelf is what covers everywhere else: folders, desktop apps, anything that takes a file.
There is also a Ctrl+C shortcut that puts captured files on the clipboard, for upload dialogs that take a paste instead of a drag.
Privacy
It never touches the network. At all.
DragIn1 makes no network connections of any kind. It reads the file you dropped, writes it to your own disk, and hands it to whatever you drag it to. That is the entire data flow, and because the source is public you do not have to take our word for it.
No accounts, no sign-in
No analytics or telemetry
No licence checks
No update pings
No third-party SDKs
No data leaves your PC
Captured files are stored at %LOCALAPPDATA%\DragIn1\ on your machine and cleaned up automatically after seven days. The installer adds no services, drivers, shell extensions or scheduled tasks, and requires no administrator rights.
The full policy, covering both the desktop helper and the Chrome extension: DragIn1 privacy policy.
Compatibility
Drag from these, drop onto anything
Drag from
- New Outlookthe olk.exe desktop app
- Outlook on the weboutlook.office.com
- Microsoft Teamsfiles and chat attachments
- Gmailin any Chromium browser
- SharePointdocument libraries
- OneDriveweb and sync views
Drop onto
- File Explorerfolders, desktop, network shares
- Browser upload boxesany drop-a-file control
- CRMs and ERPsSalesforce, NetSuite, Dynamics
- Chat appsSlack, Teams, Discord
- Ticketing systemsJira, Zendesk, ServiceNow
- Desktop applicationsanything that accepts a file
Windows 10 and 11. Needs .NET Framework 4.x, which is already on every Windows 10 and 11 machine. Nothing on the receiving end has to cooperate, or even know DragIn1 exists.
Before you install
Windows will warn you. Here is why.
“Windows protected your PC”
Click More info, then Run anyway.
This is SmartScreen, and it appears because DragIn1 is not code signed. A certificate that removes the warning costs a few hundred dollars a year, which is not something a free tool can carry. The warning is about the absence of a paid certificate, not about anything detected in the file.
It will also come back on every new release, because SmartScreen ties its reputation to a specific file hash and every release is a new file.
If you would rather not take that on faith, you do not have to:
- Read the sourceThe whole app is two C# files, MIT licensed, public.
- Check the hashEvery release publishes a SHA256 computed by the public build workflow.
- Build it yourselfAbout two seconds, using a compiler already on your machine. No SDK, no downloads.
Common questions
Frequently asked
Why is drag and drop not working in New Outlook?
New Outlook is built on Chromium, and Chromium hands dragged files over differently from a normal Windows application. It offers the file, then waits for the receiving app to ask for it in a specific way that almost nothing implements. Nothing is broken on your machine, and no setting will change it.
Why can I drag attachments in Classic Outlook but not New Outlook?
Classic Outlook is a native Windows application and puts a real file on the drag immediately. New Outlook cannot, because at the moment you start dragging the attachment is still on a server rather than on your disk.
Does this work for Teams, Gmail, SharePoint and OneDrive?
Yes. They are all Chromium based and fail in exactly the same way, so the same fix covers all of them.
Does DragIn1 send my files anywhere?
No. DragIn1 makes no network connections of any kind. There are no accounts, no licence checks, no update pings and no analytics. Files are copied to your own machine and cleaned up after seven days.
Is DragIn1 really free?
Yes, and it is MIT licensed with the full source on GitHub. There is no paid tier, no trial and no upsell.
Why does Windows warn me when I install it?
DragIn1 is not code signed, and SmartScreen warns about any application that has not built up reputation. The warning means nothing has vouched for the file yet, not that anything was detected in it. Click More info, then Run anyway.
Still stuck? Support and troubleshooting
One product family
There is a Chrome extension too
The DragIn1 extension covers the same problem from inside the browser, and it is what turns a web upload into a single motion. With the helper running, the extension receives the captured file and hands it straight to the page’s uploader, so you drag an attachment from New Outlook onto an upload box and it just uploads.
The two work together: the extension handles upload boxes on web pages, and the desktop shelf handles everywhere else. The extension needs the helper installed, since on its own it has nothing to receive.