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How long does it take to move MSG file to Thunderbird in bulk?
by arjun mehta - Thursday, 9 April 2026, 11:31 PM
 

If you are looking to move MSG files to Thunderbird,  depends mainly on the number of files, their total size, and system performance. In most cases batch migration using tools like Aryson MSG File Converter can process a few hundred emails in several minutes while larger datasets containing thousands of MSG files may take anywhere from 10 to 60 minutes. Smaller transfers under 1,000 files are usually completed within 5 to 15 minutes if attachments are minimal and system resources are adequate Faster SSD storage and higher RAM can reduce processing time significantly The overall duration also depends on whether filtering or format conversion options are applied during migration as these add extra processing steps but ensure accurate email transfer into Thunderbird without data loss or corruption overall efficiency

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Re: How long does it take to move MSG file to Thunderbird in bulk?
by Carol Campbell - Wednesday, 22 April 2026, 2:41 AM
 
The duration necessary for bulk migratory conversion of MSG files into Mozilla Thunderbird varies based on how many individual MSG files you're converting, as well as their sizes. For small conversions (dozens of emails), expect approximately 5-15 minute conversions (total time). For larger volumes (hundreds to thousands of MSG files), total conversion time is likely to take anywhere from 10 to 30 minutes, depending on your system's speed and the method you choose to use. When using a secure and dependable conversion tool, such as GainTools MSG to MBOX Converter, this conversion process will not only go quicker, but it will also happen without any data loss. GainTools also provides a free trial test phase which allows you to check out the conversion results prior to performing huge bulk conversion tasks.