Top 2 Methods to Convert OST to EML File – Easily

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OST files are widely used to store Email data locally in Microsoft Outlook. Unfortunately, OST files are not compatible with all email clients, which makes it more crucial to convert OST to EML files. However, EML files are standard file formats for storing individual email data. EML files can be easily viewed by other email clients, even in MS Outlook.

In this article, we will explore the top methods for converting OST files to EML files. We’ll cover both automated and manual approaches, ensuring you have a comprehensive understanding of the process. After that, you will be able to open your OST emails in any email client you want easily, without a lot of hassle.

1. Convert OST to EML File With Best Approach

Cigati OST to PST Converter is a helpful tool for changing OST files into EML files or PST files. It keeps all your data organized just like before, including folders and attachments. You can convert lots of files at once, which saves time. This means your data stays safe without any mistakes during conversion. Plus, it’s easy to use, so you can switch your OST files to EML or PST without any hassle. No matter what you need, our converter is the best choice for converting OST files.

Steps to Convert OST to EML File

  • First download and run the Cigati OST to PST Converter on your device.
  • Then, select the OST file to add them.
  • Now, preview the files/folder in the preview panel.
  • Next, choose PST format from the drop-down menu.
  • Set the destination to save the file.
  • Finally, click the Convert button to initiate the conversion.

Converting OST files to EML can be tricky, but our Cigati OST to PST converter makes it easy. If you prefer doing it manually, follow these steps instead.

2. Manual Method to Convert OST to EML Format

The manual method is not a straightforward approach to convert OST to EML. First, we need to configure Gmail into Outlook to get all emails into the Outlook account then, configure Gmail to Thunderbird to extract emails into EML file format. Below are the steps you have to perform to obtain an EML file.

Stages to Convert OST to EML File Manually

Stage 1. Configuring Gmail in Outlook

Let’s take a look at how to set up Gmail in Outlook.

  • First, log in to your Gmail account and look for settings.
  • Then, go to Forwarding and POP/IMAP → enable IMAP.
  • Click on the save change button.
  • Now, go to the ( page.
  • Tap on the “Security” option and enable “less secure app access”.

Next, run Microsoft Outlook, and follow the below steps.

  • Go to FileAdd Account.
  • Enter your Name, Email address, and Password, and re-enter your password.
  • Click the Next button, once the validation process is complete, hit the “Finish” button.

Stage 2. Moving Emails to Gmail

  • Right-click on Gmail Mailbox and “select” new.
  • Set a name for files/folders and select emails the user wants to import.
  • Now drag and drop your email to the new folder.

Stage 3. Configuring Gmail with Thunderbird

Now we will set up the user’s Gmail account with Thunderbird. Scroll down to see the steps.

  • Run the Mozilla Thunderbird and go to the Tools menu.
  • Tap on “options” and click “Account settings”.
  • Select “Account Action” and click “Add Mail Account”.
  • Enter your name, email address, and password, and click on the Continue button.
  • Select IMAP as the user account type and hit “Done”.

Stage 4. Exporting Emails from Thunderbird

Finally, we are going to export the EML file from the Thunderbird. Let’s see how.

  • First, click on Gmail mailbox and select the emails you want to export (click Ctrl+A to select all).
  • Drag the selected emails and drop them onto your device.
  • All of your emails will automatically convert into EML format.

You have successfully changed OST files to EML. Now you can use EML files in many other email clients. 


Converting OST to EML format can be a challenging process for users without prior knowledge. However, with the automated approach described in this article, it becomes much easier. Users also have the option to choose the manual method to convert their OST file into EML. Regardless of the method chosen, the process is relatively straightforward. Just follow the steps above, and you’ll be able to convert your OST file into EML format in no time.

You May Also Read: Import OST Files To Gmail Accounts

About The Author:

Pradeep is a dedicated technical content writer who thrives on the intersection of technology and storytelling. With a background in engineering and a passion for writing, he brings a unique blend of technical expertise and creativity to his work. Pradeep’s articles not only educate but also entertain, making complex technical subjects approachable and intriguing for a broad audience. His work has been featured in numerous tech blogs, making him a trusted source for tech enthusiasts and novices alike.

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