How to Compress Large DBX Files Quickly?

Published On

November 17th, 2025

Reading Time

6 Minutes Reading

Note: In this blog, we will walk you through how to compress large DBX files without losing important content and formatting.

Managing large DBX files can quickly become a challenge – slowing down your email client, eating up valuable storage space, also can increase the chances of file corruption.

On the internet, we have seen several users who are having problems with their large DBX files and want to get rid of this problem.

In this blog, we are going to take up this topic how to compress large DBX files. Here, we will explain everything about this topic and provide the easiest and safest way to compress DBX files.

So, if you are one of them who needs to complete this task, you will find this blog useful.

What Challenges Do You Face with Large DBX Files?

Here are the common issues you may face with large DBX file size:

Slow performance
High risk of file corruption
Difficulty in backup and migration
Increased storage consumption
Slow search and indexing
Crashes and unexpected shutdowns
Difficulty in email recovery

What Are the Common Methods to Compress Large DBX Files?

There are many ways to compress DBX file size. Here, we are going to suggest some popular ways to reduce the size of DBX files. It is entirely up to you which method you choose to compress large DBX files.

Method 1: Compress DBX Files Using Online File Compression Software

On the internet, you will find several online solutions which can help you to compress large DBX files. It is recommended to choose any trustworthy online software and follow the below steps:

Click the Upload files option to upload your DBX file.
After uploading, click the Compress button.
Download the compressed file.

That’s it. By following these simple steps, you can easily compress your DBX file. The online solution is very good but has several disadvantages.

Limitations

File Size Upload Limitations: Most online solutions have file size limitations. You cannot load and compress a very large size DBX file.
Security and Privacy Issues: Uploading DBX files that contain sensitive and personal information can be very dangerous for you.
Slow Upload and Download Time: A large DBX file will take a long time to upload and download online.
Risk of Data Corruption: Interrupted uploads, failed downloads, or unreliable servers can easily lead to corruption and incomplete data files.
No Bulk Compression Support: You can not bulk compress large DBX files at once.

Method 2: Compress Using Built-in Compression Tools

Tools such as WinRAR, 7-Zip, or WinZip can reduce size of DBX files at the file level.

Benefits

Reduces the storage usage
Best for backups and archival
Easy to share due to reduced file size

Method 3: Using Professional DBX Compression Software

Both of the above methods contain limitations. If you don’t want any kind of limitation, then you should download and use the 4n6 Email Compressor. This is the most reliable, fast, and powerful software available for Windows users. With this powerful software, it is possible to reduce the size of large DBX files without facing any kind of problems. It successfully supports compressing multiple DBX file sizes at once without losing content and altering other information.

One of the most interesting things about this app is that it comes with the free demo edition. You can use the trial version to test the software function and operation. Also, it will help you compress some DBX files. If you feel like the software is good for you, upgrade to the licensed version.

Simple Steps to Reduce Size of Large DBX Files

Step 1: Install the application on your system, run it, and click the Open button.
Step 2: After that, browse DBX files or folders into the software panel.
Step 3: You can preview your large DBX files before compressing the file size.
Step 4: Click the Actions button and choose Compress emails from it.
Step 5: Check DBX files loaded on the left panel and compression method as per need.
Step 6: Choose the required output location and click the Save button.

That’s it. The application starts compressing the large DBX files. This compression will only take a few moments. Once the compression is done, you will get the completion message.

Benefits of Using 4n6 DBX Compressor Tool

Reduce Size of Multiple DBX Files in Bulk: The best thing about this app is that it allows users to bulk compress multiple DBX file sizes at once to save time. No need to browse DBX files again and again for compression.
Easy to Use and Tested: This advanced software has a very simple graphical user interface. You can easily and quickly use it to compress large DBX files. In addition, the tool is fully tested. You won’t lose any information from your DBX files.
Maintains Content and Formatting: We have developed this application in an advanced way. It only reduces the size of large DBX files. It guarantees that it will not affect the content and formatting. You can feel free while compressing DBX file size.
Standalone DBX Compressor: This software is completely independent to reduce size of DBX files. You don’t need to install any supportive program on your system to compress large DBX files.
Windows Compatible Program: You can download and use this DBX Compression Software on any version of Windows OS. It successfully supports Windows 11, Windows 10, and earlier versions.

What Options Does 4n6 DBX Compressor Provide to Compress DBX Files?

This tool offers several options to manage and reduce size of DBX files:

Remove Attachments: Allows you to remove attachments from DBX emails to compress sizes.
Compress Inline Images: The program successfully supports compressing inline images from DBX files. It helps to reduce the size of DBX files.
Zip and Add All Attachments of DBX Emails: With this software, you can collect attachments from your DBX files and save them in ZIP format to reduce the size.
Extract, Save, and Strip Attachments: With this software, you can remove attachments from DBX emails, save them separately, and keep the content in only one DBX file.

Similarly Read

How to Compress MBOX Files?
How to Compress Outlook MSG Files?

Conclusion

In this guide, we have discussed several effective methods to compress large DBX files. We started by understanding the challenges of overly large DBX files. After that, we explained online, manual, and professional ways to compress large DBX files. It is entirely up to you which method you choose to reduce the size of your DBX files.