How to Email a Whole Folder | Zip First, Then Attach

Email a whole folder by compressing it into a .zip file and attaching that archive. For folders over 25 MB, use a cloud storage link instead.

Email systems send individual files as attachments — folders are not files, so dragging a folder into a compose window either fails or arrives empty on the other end. Here is how to email a whole folder cleanly: compress it into a single zip archive, attach that file, and send. For anything larger than your provider’s attachment limit, a cloud storage link avoids the size cap entirely.

Why Can’t You Attach a Folder Directly to an Email?

Email protocols treat attachments as individual files with a content type header — folders are operating-system containers, not file objects your email client can transmit. When you try to attach a folder directly, the client either rejects it or sends nothing usable. Microsoft’s own guidance confirms that Outlook (new) cannot send folders directly and recommends compressing the folder into a zip archive instead. Microsoft’s official answer on attaching folders spells out the same limitation.

This applies to every major email service — Gmail, Outlook, Yahoo, Apple Mail, and ProtonMail all work the same way. The folder must become a file before it can travel as an attachment.

Method 1 — Zip the Folder and Attach the Archive

The most reliable way to email a whole folder is to compress it into a single .zip archive, then attach that file like any other document. The recipient unzips it on their end and sees the original folder structure intact. Every major platform includes a built-in compression tool, so no extra software is needed.

How to Zip a Folder on Windows

Right-click the folder, select Send to, then choose Compressed (zipped) folder. A new .zip file with the same name appears next to the original folder. Rename it if you want, then attach that file in your email.

How to Zip a Folder on Mac

Right-click (or Control-click) the folder and select Compress “Folder Name”. A .zip archive with the same name appears beside the original. That file is ready to attach.

How to Zip a Folder on Chromebook

Right-click the folder and choose Zip selection. A .zip file appears in the same location. The process works in the built-in Files app without any extensions.

How to Zip a Folder on Mobile (iPhone and Android)

On iPhone or iPad, open the Files app, long-press the folder, and tap Compress. On Android, open the Files app, long-press the folder, tap the three-dot menu, and select Compress or Archive. Both produce a .zip file you can share directly from the share sheet.

How to Attach the Zip File

Open your email composer, click or tap the Attach icon (usually a paperclip), browse to the .zip file, and select it. The file uploads and appears as an attachment. Type your message, verify the file is attached, and send. The recipient downloads the .zip and unzips it to see the original folder contents.

Method 2 — Upload to Cloud Storage and Share a Link

When the folder is too large for an email attachment (roughly 20–34 MB depending on your provider), the best option is to upload the folder to cloud storage and send a share link instead. This also keeps the folder’s structure visible in the cloud, so recipients can browse or download individual files without unzipping anything.

Share a Google Drive Link from Gmail

Upload the folder to Google Drive. In Gmail, compose a new message, click the Drive icon at the bottom of the compose window, select the folder, and choose how you want to insert it — as a Drive link. Gmail automatically sets the sharing permissions so the recipient can view or download the folder.

Share a OneDrive Link from Outlook

Upload the folder to OneDrive. In Outlook, compose a new message, click the Attach dropdown, select Browse cloud locations, choose OneDrive, and pick the folder. Outlook inserts a link with permissions that let the recipient access the contents.

Common Mistakes When Emailing a Folder

A few errors trip people up repeatedly, and they are easy to avoid once you know what to look for.

• Attaching the original folder instead of the zip file. After compressing, a new .zip file appears next to the folder — that is the file you attach, not the original folder itself.
• Forgetting to check attachment size limits. Gmail caps attachments at 25 MB, Outlook at 34 MB. If your zip file exceeds that, switch to a cloud storage link instead of trying to force the attachment through.
• Sharing a cloud link without setting permissions. A link the recipient cannot access is useless. Always set sharing to “Anyone with the link can view” (or your preferred level) before pasting it into the email.
• Opening unexpected zip attachments without scanning. Zip archives can carry malware. Security guidance from CISA-linked sources recommends verifying the sender’s identity and keeping antivirus software current before opening any compressed file from an unfamiliar source.

What About Sending an Email Folder in Outlook?

If your goal is to send a collection of email messages — not files — Outlook users sometimes want to bundle an entire mail folder into a new message. Microsoft’s documentation confirms that Outlook (new) does not support sending mail folders directly. The workaround is to forward individual messages as attachments or export the folder as a .pst file and share that instead. For sending file folders, the same zip-first rule applies in Outlook as in every other email client.

Quick Steps to Email Any Folder

1. Right-click the folder and choose Compress (Windows, Mac, Chromebook) or use the Files app on mobile.
2. Open your email provider and compose a new message.
3. Click the Attach icon and select the .zip file.
4. If the zip is too large, upload the folder to Google Drive or OneDrive and paste the share link into the email instead.
5. Confirm the attachment or link works, then send.