How to Export Kerio Mailbox to PST Format – [Step-by-Step]

  • Written By  

  • Updated on September 23rd, 2025

5/5 - (1 vote)

Email platforms like Kerio Connect impose mailbox size restrictions to maintain stability and control storage consumption. One practical way is to export Kerio mailbox to PST format. While the process may seem complex and technical at first, following the right approach makes it simple. We’ll explain everything step by step in detail. This will include both the manual approach and the automated approach using the Cigati IMAP Backup Tool. Now, let’s begin the process. 

Reasons to Export Kerio Connect Mailbox to PST

The Kerio mailbox to PST format is required for migration, backup, and performance reasons. Let us now look at some of the reasons for this conversion process:

  • In scenarios where the user accidentally deletes the data, a PST backup of the Kerio mailbox becomes helpful. 
  • When the employee exits the company, their emails are stored in a PST file. This becomes helpful for audit or future use. 
  • To reduce the server load, export older Kerio emails to a PST file when the mailbox storage reaches its limit.
  • By exporting Kerio mailbox to Outlook PST format, the backed-up emails become portable and accessible offline. 
  • Nowadays, organizations shift from Kerio to Microsoft Exchange or Office 365. To export the Kerio emails to these platforms, it is necessary to export them to PST format. 

Efficient Ways to Export Kerio Mailbox to PST Format

After looking at the reasons that users consider exporting their mailbox to PST format, let’s move ahead. In the next section, we will learn about a manual method using IMAP and an automated method that simplifies the process. Let’s begin.

Method 01: Manually Convert Kerio to PST Format via Outlook

Kerio Connect does not directly export the emails to an Outlook PST file format. Therefore, we use MS Outlook with the IMAP configurations. 

Use the following step-by-step instructions to begin the process:

Step 01: Configure Kerio Mailbox in Outlook

  1. In Outlook, go to File > Add Account.
  2. Then, enter the Kerio email account credentials. 
  3. Afterward, enter the IMAP details:
Incoming Mail Server (IMAP)imap.domain.com
Outgoing Mail Server (SMTP)smtp.domain.com
  1. Now, enter the Kerio login details and verify the account settings.
  2. Wait for some time and let Outlook sync the emails.

Step 02: Export Email from Kerio to PST 

  1. Now, again navigate to File > Open & Export > Import/Export in Outlook.
  2. After that, select Export to a file > Outlook Data File (.pst) as the export format.
  3. Next, select the folders or the mailbox you want to export to PST.
  4. Save the location to the desired folder and tap Finish
  5. You can access the PST file by importing it into Outlook.

Limitations: Large email data will take a lot of time while exporting. The user should know how to set up IMAP. Also, if the internet is unstable, there can be a problem in syncing the emails through IMAP. 

Method 02: A Reliable Tool to Export Kerio Mailbox to PST Format

With the Cigati Kerio to PST Converter, one can securely export the Kerio email data to Outlook PST format. Users can backup their emails in multiple file types, such as PST, PDF, MBOX, etc. Moreover, users can export them in bulk. Also, it can migrate directly to popular webmail platforms. The tool also preserves the attachments, applies filters for email selection, and avoids duplicates. 

Quick steps to export Kerio Connect mailbox to PST:

  1. After installing the software, launch it on your system.
  2. Then, click Continue and decide whether to choose Single Mode or Batch Mode.
  3. After that, provide the login credentials of the Kerio account.
  4. Now, choose the folder(s) you wish to export. Then, click Next.
  5. From the available list of options, choose PST as the saving File Format.
  6. Next, add any extra filters that you need. 
  7. At last, press Next, and the export process will begin.

Conclusion

The Kerio to PST conversion process is essential for backup and accessibility in Microsoft Outlook. The manual IMAP method is a basic approach to achieve this conversion. Also, this manual approach is limited in scope and is prone to errors. Whereas, with the Cigati Kerio to PST Converter, users can simply bulk export Kerio mailbox to PST, while preserving folder hierarchy. The tool offers advanced features like faster processing, duplicate prevention, and selective migration.

You May Also Read: Migrate Kerio Connect to Gmail

Frequently Asked Questions

Q: How do I manually export emails from Kerio to PST?

Ans: For a manual method, first add your Kerio mailbox in Outlook. You can add the mailbox using the IMAP migration. After that, export the emails to a PST file using Outlook’s Import/Export feature.

Q: Is there a file size limitation when exporting a Kerio mailbox to PST?

Ans: Yes, there a file size restrictions while exporting Kerio email data to PST format. For newer versions, Outlook PST files have size constraints of 50GB. While exporting, large PST files should be split into smaller files.

About The Author:

Rohit Singh is an Email Backup, Recovery & Migration Consultant and is associated with Software Company from the last 3 years. He writes technical updates and their features related to MS Outlook, Exchange Server, Office 365, and many other Email Clients & Servers.

Related Post

100% safe and secure100% Safe & SECURE
SupportLifetime Support (24X7)
Money BackMoney Back Policy
Trusted by CustomersTrusted by 10000+ Customers