In this guide I explain how to password protect a folder to send it securely via email, WhatsApp, or any other medium you prefer.

When you need to send personal documents, private photos, or any other type of sensitive information, it’s best to protect the content before sharing it. One of the most effective ways to do this is to password-protect the folder where the files are stored. This can be easily achieved with free tools, both on your computer and mobile device. If you’d also like to learn more file compression options, I recommend checking out this selection of file compression apps .

Password protect a folder from your computer

Sometimes we need to send a folder with protected files for various reasons. Maybe someone at work needs some sensitive files, or you need to send a document you’ve written to your professor. It doesn’t really matter which situation you’re in: it’s almost always best to encrypt a folder before sending it.

While Windows and macOS make it easy to compress folders, neither offers a native option to add a password . This means that if you want to protect your contents, you’ll have to use a third-party application. Two of the best-known tools for this task are WinRAR and 7-Zip . Both are free for basic use, but if you’re on Windows, 7-Zip is the best option . It’s open-source software, with good support for multiple formats, and is very easy to use.

Here are the steps you need to follow to compress a password-protected folder using 7-Zip:

1. Download and install 7-Zip from its official website .
2. From Windows File Explorer , right-click on the folder you want to protect.
3. From the context menu, choose 7-Zip > Add to Archive… If you’re on Windows 11, you may need to click  Show more options first .
4. In the window that appears, select File Format . You can choose a ZIP file type , which is generally more compatible, or 7Z, which offers greater compression.
5. In the Encryption section , enter the password in the Enter Password field and repeat it below.
6. Check the Encrypt file names option if you want to hide the file contents until the password is entered.
7. Click OK to create the protected compressed file.

Now you have your folder or files password-protected. You can now send the compressed file to anyone, but remember to provide the password to decrypt it.

How to password protect a folder from your mobile phone

Mobile phones have become complete tools for managing files, even when it comes to security. On both Android and iOS, you can password-protect a folder thanks to specialized apps that allow you to compress and encrypt files.

On Android, the most widely used operating system, an excellent option is the RAR app , created by the same developers as WinRAR. It’s free and works very well for this type of task.

To password-protect a folder from your mobile phone using RAR, follow these steps:

1. Download the RAR app from Google Play.
2. Open the app and locate the folder you want to protect.
3. Press and hold the folder to select it.
4. Tap the compress icon (a file image with a “+” sign) at the top.
5. On the new screen, activate the Set Password option .
6. Enter and confirm the desired password.
7. Choose the file format (ZIP or RAR) and tap OK to generate the protected compressed file.

If you use iOS, you can use tools like iZip or WinZip . Both allow you to easily create password-protected compressed files from your iPhone or iPad. Simply install one of them, select the files or folders from the iOS Files app, and follow the steps to compress them with a password.

After you password protect a folder, remember to send it securely.

Once you’ve generated a password-protected compressed file, such as an encrypted ZIP or RAR, you can rest assured that the contents are protected by encryption . No one will be able to view or extract the files without the password you set.

Of course, now comes a tricky part of the process: how to send the password . You should never include the password in the same email or message you send the protected folder. Ideally, share it via a different channel, such as a text message, a call, or a separate messaging app. And, of course, avoid using passwords that are obvious or easy to guess.

If you still want to add an extra layer of security, I recommend using other sending methods, such as a protected folder in OneDrive , where you can set an expiration date for the link. In this guide, I explain how to share a file with OneDrive . You can also opt for services like WeTransfer , which offer temporary links and password-protected options without the need for an account.

How do you do it? Do you usually password-protect a folder before sharing it, or do you just send it? Tell me what method you use and if you k