Need to perform IMM to PST conversion? Cannot convert IMM to PST? A solution is - MailMigra for Incredimail. MailMigra for Incredimail is best IMM to PST Converter tool that is helpful for converting IMM to PST. For imm to PST converter, the program do not require Incredimail installation. IMM to PST Converter for converting Incredimail IMM (default & separately saved) files to PST files of Outlook 2010, 2007, 2003, 2000. IMM to PST Converter is Windows Based application to convert MM to PST on windows Machine. IMM to PST Converter helps users to convert .imm to .pst with all emails, attachments, header details.