Manage Outlook Emails and Attachments Seamlessly in Microsoft 365
Attachment Flow is an Outlook add-in that helps you upload and organize emails, attachments, and files directly in OneDrive or SharePoint. Stay compliant, keep records structured, and boost productivity — all without leaving Outlook.
Features
Discover the tools that make email and document management effortless inside Outlook.
Organize Effortlessly
Attachment Flow always respects your Microsoft 365 permissions—if a user doesn’t have write or edit rights, they can’t change or delete anything.
- Save entire emails or individual attachments straight to OneDrive or SharePoint
- Mark favorite folders for one-click access
- Create new folders and rename files or folders instantly
- Open items in the browser with a single tap
- Delete or tidy up files in seconds
Share with Confidence
All links remain accessible only to people inside your organization, following your company’s security policies.
- Start a new email with secure OneDrive/SharePoint links
- Attach files directly from your cloud storage
- Copy a shareable link and paste it anywhere you need
Find It Fast
- Global search across OneDrive and SharePoint
- Instantly locate emails, files, or folders by name or keyword
- Skip the folder maze with lightning-quick results
Results show only the files and folders the signed-in user is authorized to view.
A Door to SharePoint Inside Outlook
Make SharePoint adoption easy — upload and share files directly from Outlook.
Find Everything, Instantly
Search across SharePoint and OneDrive without leaving Outlook.
Cleaner Emails, Happier Clients
Send professional, lightweight emails that never hit size limits.
Secure File Sharing Made Simple
Replace risky attachments with secure OneDrive or SharePoint links.
Get Free Early Access to Attachment Flow
Try the Outlook add-in that makes uploading attachments effortless.
Contact UsHave a question? Check out the FAQ
Common questions about Attachment Flow — answered.
How does Attachment Flow work inside Outlook?
After installing the add-in, you’ll see an 
Attachment Flow
button in Outlook. Simply open an email, choose a folder in OneDrive or SharePoint, and click Save.
The file uploads instantly to your selected location.
Which versions of Outlook are supported?
Attachment Flow works with Microsoft 365 Outlook on the web, the new Outlook for Windows, and Outlook for Mac. Classic Outlook desktop support is coming soon.
Can I use Attachment Flow with both OneDrive and SharePoint?
Yes. You can connect to either OneDrive or SharePoint Online, or switch between them anytime.
How do I connect Attachment Flow to my OneDrive or SharePoint?
When you open Attachment Flow for the first time, sign in with your Microsoft 365 account. Your OneDrive and Shrapoint is available in the application.
Can I save both emails and their attachments together?
Yes. You can save entire emails as .eml files along with their attachments in the same folder.
Is my data safe when using Attachment Flow?
Yes. Attachment Flow uses Microsoft’s secure OAuth2 authentication and never stores your emails or files on external servers.
How do I install Attachment Flow?
Attachment Flow is deployed via Microsoft 365 Admin Center. Read the Step by step guide how to install it.