How to Download Multiple Attachments From Office 365
Why Download Office 365 Attachments in Bulk
Pulling every attachment into one place pays off the moment your inbox gets heavy. A bulk save gives you a single folder on disk for every file, a clean archive for tax, invoice, or HR records, and offline access to PDFs, images, and contracts when you have no connection. It also frees up mailbox space and gives you a safe copy before a migration or a mailbox close.
Method 1 Save All in the Outlook Desktop App
The Outlook desktop app has a built in save that works one mail at a time. It is the right pick for a small set.
Open Outlook and sign in to the Office 365 account. Click a mail that has attachments, right click any attachment, and choose Save All Attachments. Pick a save folder and click OK. The files land on your drive in seconds.
Two limits are worth knowing. This option only handles the mail you have open, so it is slow once you are past a handful of messages, and it does not reach files sitting inside nested folders. Also note the Save All Attachments option lives in classic Outlook. The new Outlook for Windows handles attachment saving differently, so the exact steps shift if you are on the new client.
Method 2 Use a Bulk Office 365 Attachment Extractor
For hundreds of mails across many folders, a dedicated extractor is the honest choice. The Corbett Email Attachment Extractor reads every Office 365 folder and saves every file to a local drive, keeping the folder name and the date of each mail intact.
Here is the detail that trips up older guides. They tell you to sign in with an app password. That advice is stale. Microsoft has been removing Basic Authentication from Exchange Online, with IMAP, POP, and EWS access already cut off and app passwords blocked once modern security is enforced on the tenant. A current tool connects through a Microsoft OAuth sign in instead, where you approve access in a Microsoft window rather than paste a password. If a tool still asks only for an app password, treat that as a warning sign.
One more forward looking point. Microsoft begins blocking Exchange Web Services in Exchange Online on October 1, 2026, so any extractor built on EWS will stop working. A tool built on the Microsoft Graph API is the choice that keeps running past that date.
Steps to Save Office 365 Attachments in Bulk
Install and launch the extractor on a Windows PC, then pick Office 365 as the source. Sign in through the Microsoft OAuth prompt and approve access for the account.
Preview every folder and mail with attachments in the side pane to confirm the right data is selected. Click Export and pick Attachments as the output.
Use the size or date filter to skip files you do not need, browse to a save folder, and click Start. The tool writes one Windows folder per Office 365 folder, each holding its files.
Features of the Bulk Extractor
- Reads every Office 365 folder and saves every attachment in one run.
- Keeps the original folder name and the mail date on disk.
- Filters by file type, size, or date so you only save what you need.
- Connects through modern OAuth sign in rather than a legacy app password.
- Runs a personal extract for one user, with admin rights only needed for a tenant wide pull.
Which Method Should You Use
| Need | Outlook Save All | Bulk Extractor |
|---|---|---|
| Cost | Free | Paid |
| Best for | One or a few mails | Hundreds of mails |
| Reaches nested folders | No | Yes |
| File type or date filter | No | Yes |
| Sign in method | Your Outlook session | Microsoft OAuth |
If you also work across other mailboxes, the guide on how to download attachments in bulk from Roundcube pairs well with this one.
Frequently Asked Questions
Can I download attachments from Office 365 webmail in bulk?
The webmail saves one file at a time. Use a bulk extractor for a true bulk save from every folder.
Do I still sign in with an app password?
No. Microsoft has removed Basic Authentication for Exchange Online, so a current tool uses a Microsoft OAuth sign in. App passwords are blocked once modern security is enforced.
Will the original folder name stay the same on disk?
Yes. The tool creates one Windows folder per Office 365 folder with the same name and the same files inside.
Do I need admin rights to extract attachments?
A single user can run a personal extract. Admin rights are needed only for a tenant wide pull.
Is there a file type filter in the tool?
Yes. You can save only PDFs, images, Office files, or any custom extension with the built in filter.
Why does the method matter after October 2026?
Microsoft begins blocking Exchange Web Services then, so an EWS based tool will fail. A Graph API based tool keeps working.
Conclusion
You can download attachments from Outlook with the desktop Save All option for a small set, or with a bulk extractor for hundreds of mails across folders. The detail that matters most today is sign in. A current Office 365 tool connects through Microsoft OAuth, not an old app password, and a Graph based tool stays alive past the October 2026 EWS cutoff. If you plan to move other accounts in too, see the guides on how to save Hotmail mail to a hard drive and how to move Mac Mail into Office 365. How many mails are you trying to pull attachments from, and are you on classic or new Outlook?
