Download and access the PST to MBOX Converter that helps to migrate Outlook contacts to Thunderbird in batch mode conversion. PST to MBOX Converter tool converts multiple Outlook files to Thunderbird with attachments. This software provides simple GUI; anyone can easily understand and use this software without any technical knowledge. There is no file size limitation, you can convert number of files at a time. This software supports all the MS Outlook editions like 2016, 2013, 2010, 2007 & etc.