Bulk Export Spark Mail Emails to PST for Outlook in 2026

Why Do Organizations Have To Transfer Their Mailboxes?

Organizations may export their mailboxes for several business and data management reasons. As an organization increases the number of emails, it becomes difficult to manage. That’s why saving these emails in a PST file allows them to access them through Outlook. However, there are some reasons why organizations export their mailboxes.

• Local Email Backup: Spark Mail doesn’t store the data locally or provide an email backup option, so backing up your mail becomes hard.
• Archive Compatibility: It doesn’t store archives in a file format because all data is stored on servers, so it has security risks.
• Bulk Mailbox Management: When exporting mailboxes in bulk, its architecture becomes problematic because of rate-limiting or IMAP server throttling.
• Long-Term Storage: As all your mail is stored on a server, choosing this as long-term storage can be expensive for organizations.
• Organized Emails: It has a Smart Inbox that sorts your emails with the help of an algorithm. This takes your control over mailboxes.

Can We Export Emails From Spark Mail to PST Format Natively?

Spark Mail stores its data on a live server and doesn’t have a local backup. It caches some recent files so users can have offline access, but these can’t be saved as separate files. That’s why users have to either use a manual method or a professional tool depending on their needs. However, it allows users to access their original email content by connecting their Spark Mail account to a professional tool. Organizations can also choose to migrate IMAP mailboxes to Office 365 instead of creating a PST backup.

How To Actually Export Spark Mail to PST Format

Spark Mail is just an email client. It’s not an email service provider, and understanding the difference between these is important before you start exporting. There are 2 ways through which you can export Spark Mail to Outlook PST.

1. Transfer Your Mailboxes To PST Using Microsoft Outlook
2. Bulk Export Emails Using a Professional Tool

Transfer Your Mailboxes To PST Using Microsoft Outlook

This is a native method in which we will use Microsoft Outlook to export your mailboxes. It’s an ideal choice for individual users who have access to their original email account and want a backup.

Step 1: Add your Spark Mail to the Outlook application.

In this step, you have to add your Spark Mail account to Outlook.

1. Open Microsoft Outlook (Classic) with admin rights.
2. In the top-left corner, click File → Add Account.
3. Log in to the email account that was connected to Spark Mail.
4. Follow the pop-up instructions and set up your email account.
5. Or enter the incoming IMAP server details and required connection settings.
6. Wait for a few seconds so Outlook can synchronize your emails.

Export the synchronized Mailbox to PST Format

Now, you have to individually export the required mailbox to PST format using classic Outlook.

1. Open Outlook again and then navigate to File → Open & Export → Import/Export.
2. Choose Export to File and click Next, then choose Outlook Data File (.pst).
3. Click Next, log in to the Credentials, and choose the Include Subfolders option.
4. Browse your file and choose a destination folder path for the PST file.
5. Set a new name for your folder and complete the process by clicking Finish.

Limitations of The Native Method.

There are some limitations to the native method, because of which users cannot export Spark Mail to PST easily.

• Classic Outlook can export to PST format for only one account at a time.
• Outlook downloads previous mail up to 1 year by default, which can be changed in settings to a different period.
• It can take more time to completely synchronize a large PST file in Outlook.
• Users should manage all their accounts and duplicate mailboxes separately

Bulk Export Emails Using a Professional Tool

Earlier, we discussed some limitations of the manual method and learned that they are not a reliable option. Organizations need a suitable way in which they can export multiple mailboxes to PST format easily. Therefore, the Aryson IMAP Backup Software becomes an ideal choice over the manual method. The tool provides various features, including date filters, server cleanup, custom output folder, etc. It doesn’t depend on Outlook for exporting Spark Mail and has a simple GUI to facilitate smooth export.

Key Capabilities of a Professional Tool

There are various features offered by this tool, which are listed below to transfer Spark Mail emails to PST easily.

• Server Cleanup: Users can choose to delete their source mailboxes permanently or move them to the bin.
• Date Filters: You can filter a required mailbox between specific ranges by choosing start and end dates.
• Splitting Output File: It has an option to split the output PST file based on its size, up to 50 GB.
• Removing Duplicate Mails: Users can skip duplicate emails by filtering them on an email content basis, including subject, body, From, and To.
• Additional Options: You have the choice to either exclude duplicate emails and empty folders or fetch emails without attachments.
• Different Attachment Options: It allows you to save attachments with their emails, and save them separately by choosing the required output folder.
• Various File Formats: Users can also migrate emails from IMAP to CSV, PDF, PST, MBOX, and other file formats.

Step-by-Step Procedure to Export Spark Mail to PST

Follow these steps to export your mailboxes to PST file format.

1. Download and install the Aryson IMAP Backup Tool, then open it with admin rights.
2. Click Launch Migration Console and choose the IMAP/POP3 migration option.
3. Log in to your IMAP account with Spark Mail, then click Text Connection.
4. Then, click Continue, choose the required mailbox, and click Continue to Filter.
5. Choose the File Format option and select PST as the required output format.
6. Apply various filters as per the need and click Start Export, then wait for a few seconds.

Note: Through the above-mentioned steps, you can easily convert Spark Mail emails to PST. However, it’s recommended to go through the software guide for a detailed explanation and working of the tool.

Conclusion

Organizations require access to their original email accounts to export Spark Mail to PST format. To do so, they need an efficient way, which is not possible through the native method. As the native method is a time-consuming process and doesn’t provide bulk export support. Therefore, it’s recommended to use the Aryson IMAP Backup Software to ease the export process. The tool also provides a demo version, which can export up to 100 emails per folder.

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