How to Split OLM Files by Size, Date, & Folder: A Complete Guide

Written By Kiran Sharma
Updated on November 19th, 2024

Summary:Outlook for Mac uses the OLM file format to store all emails, contacts, calendars, tasks, and other mailbox items. If your OLM file size grows too large, it can slow down performance and make managing your mailbox complex. To resolve this issue, splitting OLM files by size, date, or folder can help in the proper workflow of your email management and prevent data corruption. In this blog, we will discuss manual and automated solutions such as the OLM Splitter Tool to split OLM files by size, date, & folder hassle-free.

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Table of Contents

Why Do We Need to Split OLM Files?

Splitting OLM files is essential for maintaining a smooth and efficient email experience in Outlook for Mac. Here are the main reasons why you might need to split OLM files:

By splitting the OLM file into smaller, manageable parts, you reduce the risk of corruption.
Splitting a large OLM file into smaller parts reduces the load on Outlook.
Smaller OLM files are easier to handle and convert when migrating emails from Outlook for Mac to another platform.
Along with that, handling smaller files is easier and more convenient.
When you split OLM files into smaller parts, you can back up your data more quickly and efficiently.

These pointers make clear that Splitting OLM files is a smart way to keep Outlook for Mac running smoothly. It helps improve performance and protects your data.

How to Split OLM File by Size, Date & Folder

There are two primary ways to split OLM files. First of all, we will see the manual method to divide oversized OLM files. After that, we will navigate to the automated solution to do the same. Go through both of them one by one separately.

#Method 01: Manual Way to Split Oversized OLM file

Here, we will describe the manual way to split your OLM files into smaller ones. The manual methods can be helpful for smaller tasks. Along with that, the individual must know technical things to accomplish the task manually:

First of all, open the applications folder on your Mac.
After that, right-click on the Outlook app and choose ‘Show Package Contents’.
Next, navigate to the Contents folder and then open Shared Support.
Now, launch the Outlook Profile Manager and create a New Profile.
Once the new Outlook profile is set up, import the large OLM file into it.
Export the data from this profile, which includes emails, contacts, calendar events, tasks, and notes.
This process will create a separate OLM file for each type of data (e.g., emails, calendar events, tasks, notes).

Cons you face while using the manual way to split OLM files

Manually splitting OLM (Outlook for Mac) files can be challenging and time-consuming. Here are some common drawbacks you might face:

Time-consuming: Manual splitting can take significant time for large OLM files.
Risk of Data Loss: Errors during the process may lead to data corruption or loss.
Complexity: Requires technical expertise and multiple steps.
Size Limitations: Difficult to handle very large files effectively.
No Automation: Repetitive tasks need to be done manually.
Dependency on Tools: This may require additional utilities like Outlook for Mac.

#Method 02: Expert Way to Split OLM File by Size, Date & Folder

OLM Splitter is a software tool designed to help users divide large OLM files into smaller parts. It breaks the large files into smaller pieces and reduces the risk of data corruption. Also, it provides flexible options. So, you can split files by size, date, or email sender. While splitting the OLM mailbox, you have the option to exclude duplicate emails. This software is user-friendly, works on all versions of Mac OLM files, and ensures no data is lost during the splitting process. It’s beneficial for people who are managing a lot of data in Outlook on Mac. Next, we will mention the steps to split oversized OLM files:

Simple Steps to Break OLM File Size

Download and install the OLM Splitter software.
After that, open the application on your system.
Click on the “Add File” or “Browse” button to upload the OLM file you want to split.
In the preview panel, it will load the file and display its contents.
Select how you want to split the OLM file. Options include:
- By Size (e.g., split into smaller files of a specific size).
- By Date (e.g., split emails based on a date range).
- By Sender (e.g., divide emails based on sender details).
If required, check the option to remove duplicate emails from the file during the splitting process.
Choose the destination folder where the split files will be saved.
Lastly, click the “Split” button to begin the process.
The tool will create smaller OLM files based on your chosen criteria.

Once the process is complete, navigate to the output folder to access your split OLM files. Along with that, it ensures data integrity, is easy to use, and provides quick results.

Read More: A Comprehensive Guide to Convert OLM File to EML

Conclusion

In this complete blog, we have learned that splitting OLM files by size, date, or folder can be a valuable approach for better organization and storage management. Various methods, from manual techniques within Outlook for Mac to automated third-party tools, can help to Split OLM Files by Size, Date & Folder. However, the manual processes are cost-effective, they require more time and effort. In contrast, professional tools provide a faster, more user-friendly solution with advanced customization options for splitting. Ultimately, the choice of method depends on your specific needs, technical expertise, and the volume of data. So, you can frequently pick the appropriate method according to your needs.

About The Author:

Kiran Sharma

I am Kiran Sharma, a Technical Expert in Content writing. I have technical expertise in the field of Email Backup, Data Recovery, and Email Migration, and resolve technical queries related to Cloud Backup or Email Migration for individuals and businesses.