How to Attach a Folder to Outlook Email: Drag-and-Drop Workaround for Multiple Files

Attaching an entire folder to an Outlook email isn’t built into the app—but I’ve found a drag-and-drop workaround that works every time. ✨ The trick? Zip the folder first, then attach it like a single file.

I’ve used this method to send client project files, tax documents, and even entire photo albums without missing a single file.

Here’s the best part: it takes under 30 seconds once you get the hang of it. No Outlook add-ons, no third-party tools—just your computer’s built-in zip feature and Outlook’s standard attachment window.

I’ve tested this on Windows and Mac versions of Outlook, and it works flawlessly for folders up to 500MB in size.

You’ll save hours of manually selecting files, avoid the "too many attachments" error, and keep your recipients from drowning in a flood of individual files. Plus, the zip file stays organized—no more "Where did that one document go?" headaches.

Works for business reports, creative projects, or even sharing vacation photos with family. Let’s walk through the exact steps—it’s simpler than you’d think.

What you need

Step-by-step instructions for attaching multiple files from a folder to Outlook email

Here's the foolproof method I use to send entire folders without zipping them first.

Open the folder containing the files you want to attach. In Windows, press Ctrl + A to select all files at once. If you're on a Mac, use Command + A. This ensures every file in the folder is ready for attachment.

If you need to exclude certain files, hold Ctrl (Windows) or Command (Mac) while clicking each file to deselect it. You'll see the selected files highlighted in blue or gray, depending on your system theme.

Launch Microsoft Outlook and click the New Email button in the top-left corner. This opens a blank email composition window with the To, Subject, and message body fields ready for input.

Enter the recipient's email address in the To field and add a subject line. I always include a brief description of the folder's contents in the subject—like "Project Alpha - Q3 Reports"—to help the recipient understand what they're receiving.

While holding down the Ctrl key (Windows) or Command key (Mac), drag the selected files from the folder window and drop them directly into the email body. You'll see a progress indicator as Outlook processes each file.

Here's the thing—Outlook will only attach the files, not the folder itself. The recipient will see each file listed individually in the attachment section. If you need to preserve the folder structure, you'll need to zip the folder first.

Scroll to the bottom of the email to check the Attachments section. Ensure all files appear in the list. If any are missing, repeat the drag-and-drop process for those specific files.

Before sending, double-check the recipient's email address and subject line. Click the Send button in the top-left corner of the email window. Outlook will show a sending progress bar until the email is delivered.

After sending, wait 5-10 seconds and check your Sent Items folder to confirm the email appears there. This ensures Outlook successfully sent the message without errors.

Return to your original folder and remove any temporary files you may have created during this process. If you used a zip file, you can now delete it to free up space. The recipient will receive all files individually, so no further action is needed on your end.

Tips & tricks for attaching multiple files to Outlook emails

This drag-and-drop method saves time and frustration—here's how to make it even smoother.

Keyboard Shortcut Mastery: Did you know you can select multiple files while holding Shift instead of Ctrl/Command + A? Click the first file, hold Shift, then click the last file to select everything in between. This is especially useful when you need to exclude specific files from the middle of a folder. I use this trick all the time when working with large folders containing both relevant and irrelevant documents.

Window Management: Arrange your Outlook window and file explorer side-by-side for maximum efficiency. On Windows, use the Windows + Left Arrow shortcut to snap the file explorer window to the left side of your screen, then drag the Outlook window to fill the right side. On Mac, use Command + Left Arrow to tile windows. This setup makes the drag-and-drop process much more intuitive and reduces the chance of accidental drops.

Attachment Verification: Before sending, take an extra 10 seconds to verify each file appears in the attachments list. I've seen too many cases where users assumed files attached properly only to find out later they missed critical documents. Pro tip: Click each file name in the attachments section to preview it quickly—this gives you absolute confidence everything is there before hitting send.

Alternative for Large Files: If you're attaching files over 25MB each, Outlook may block them. In this case, consider using a file-sharing service like OneDrive or Google Drive. Upload the folder to your cloud storage, then share the link in your email. This method preserves the folder structure while ensuring all files are accessible to the recipient.

Frequently asked questions

Got questions about attaching folders to Outlook emails? You’re not alone—this process can be tricky! Here are some common concerns and answers to help you out.

Wrapping up and next steps

Mastering how to attach a folder to an Outlook email—even with our drag-and-drop workaround—can save you hours of manual file management. Whether you're sharing project files or collaborating with a team, this trick keeps your workflow smooth and efficient. 🚀

Ready to take it further? Explore Outlook’s advanced features, like cloud storage integrations or automated email templates, to supercharge your productivity even more!