GainTools PST to EML Converter is a great tool for altering PST files into EML files. It changes PST emails with attachments into EML format while keeping the original folder structure, message attributes, and metadata. Its simple design allows it to be possible for anyone, including those who have never used it before, to make conversions without having to know anything about technology. The tool has batch migration functionality, which lets users export several PST files at once in EML file format. It also has advanced filters that let users choose certain folders or ranges of data. These features make it great for things like switching email clients (from Outlook to Thunderbird, Windows Live Mail, etc.), backing up data, and archiving mailboxes. The application can also handle PST files that are too big or broken, which makes it easy to restore and convert data. It works with all versions of Outlook and Windows, so it's a flexible option for people, IT admins, and enterprises.