The fastest way depends on file size and who you're sending to
A zip file is a compressed folder that bundles multiple files or a large file into a smaller package. You send it the same way you send any other file — through email, cloud storage, or a file-transfer service. The method you choose depends mainly on the total size: email works for files under 20 to 25 MB, while larger files need cloud storage or a dedicated transfer service.
Most computers and phones can open zip files without extra software. Windows and Mac both have built-in tools. On a phone, you may need a free app like Archive Utility (Mac), Files (iPhone), or ZArchiver (Android), though many phones now unzip automatically.
Key Takeaways
- Email works for zip files under 20 MB; Gmail, Outlook, and most providers reject anything larger.
- To create a zip file on Windows, right-click the folder or file, select "Send to," then "Compressed (zipped) folder."
- On Mac, right-click the file or folder and choose "Compress," which creates a zip automatically.
- For files over 25 MB, use Google Drive, Dropbox, OneDrive, or a free service like WeTransfer or Tresorit instead of email.
- The recipient needs only a standard file manager to open a zip file — no special software required on most devices.
Creating a zip file on Windows
Right-click the file or folder you want to compress. A menu appears. Select "Send to," then click "Compressed (zipped) folder." Windows creates a new zip file in the same location with the same name plus ".zip" at the end.
If you have multiple files to send together, select them all first (hold Ctrl and click each one), then right-click and follow the same steps. Windows zips them into a single file.
The zip file is now ready to attach to an email or upload to a cloud service. You can rename it by right-clicking and choosing "Rename" if you want a different name.
Creating a zip file on Mac
Right-click the file or folder you want to compress. Select "Compress" from the menu. Mac creates a zip file automatically in the same location.
To zip multiple files at once, select them all (hold Command and click each one), then right-click and choose "Compress." Mac combines them into a single zip file named "Archive.zip" by default. You can rename it afterward.
On newer Macs, you can also drag files into the Archive Utility application, though the right-click method is faster for most people.
Sending a zip file by email
Open your email (Gmail, Outlook, Yahoo, or another provider). Start a new message and add the recipient's address. Click the attachment button — usually a paperclip icon — and select the zip file from your computer.
Most email services accept zip files up to 20 or 25 MB. Gmail allows up to 25 MB per message. Outlook allows up to 20 MB. If your zip file is larger, the email will fail to send, and you'll see an error message. In that case, use a cloud service instead.
After attaching the file, write your message and send normally. The recipient receives the zip file as an attachment and can download and open it on their device.
Using cloud storage for larger files
If your zip file is over 25 MB, upload it to a cloud service instead. Google Drive, Dropbox, OneDrive, and iCloud all work. Sign into your account, click the upload button, and select your zip file. Once uploaded, you can share a link with the recipient.
Google Drive: Click "New," then "File upload." Select the zip file. Right-click the uploaded file, click "Share," and copy the link. Send the link to the recipient via email or message.
Dropbox: Click "Upload files," select the zip file, then right-click it and choose "Share." Copy the link and send it to the recipient.
OneDrive: Click "Upload," select the zip file, then click the three dots next to it and choose "Share." Copy the link and send it.
Using free file-transfer services
Services like WeTransfer, Tresorit, and Firefox Send let you upload a file and send a download link without creating an account. Go to the website, click "Upload" or "Add Files," select your zip file, enter the recipient's email address, and send. The recipient gets a link to download the file, usually valid for 7 to 14 days.
WeTransfer allows up to 2 GB per transfer for free. Tresorit allows up to 5 GB. These services are useful if the recipient doesn't have a cloud account or if you want to avoid email attachment limits entirely.
Some services require you to create a free account; others do not. Check the website before uploading to see what's required.
Opening a zip file on the receiving end
On Windows, right-click the zip file and select "Extract All." Choose where you want the files to go, then click "Extract." Windows unpacks the files automatically.
On Mac, double-click the zip file. Mac unpacks it automatically in the same folder.
On iPhone or iPad, tap the zip file in the Files app. It unzips automatically. On Android, open the file with an app like ZArchiver or Files by Google, then tap "Extract."
After extraction, the original files appear in a new folder with the same name as the zip file. You can delete the zip file once you've confirmed the extracted files are there.
Frequently Asked Questions
Why would I zip a file instead of sending it as-is?
Zipping reduces file size, which means faster uploads and downloads. It also bundles multiple files into one, so the recipient gets a single attachment instead of many. Some files compress more than others — photos and videos compress less than documents and spreadsheets.
Can the recipient open a zip file on their phone?
Yes. iPhones and newer Android phones unzip files automatically in the Files or Files by Google app. Older Android phones may need a free app like ZArchiver. The recipient doesn't need special software in most cases.
What if the recipient can't open the zip file?
Ask them what device they're using (Windows, Mac, iPhone, Android). If they're on Windows or Mac, they have built-in unzip tools and should be able to open it by double-clicking. If they're on a phone, they may need to download a free app. If the file is corrupted during transfer, try uploading it again through a different method.
Is there a limit to how many files I can put in a zip?
No hard limit exists, but very large zips (over 1 GB) can be slow to create and transfer. If you're zipping hundreds of files, consider splitting them into multiple smaller zips instead.
Do I need to password-protect a zip file?
Most zip tools don't offer password protection by default. If you need to secure sensitive files, use cloud storage with sharing permissions instead, or use a third-party tool like 7-Zip (Windows) or Keka (Mac) that supports encryption.