You can import PST to IMAP account easily by using a professional tool Aryson PST Converter. First, install and launch the software on your system. Then, browse and select the Outlook PST file you want to migrate. Preview the mailbox data and choose IMAP as the destination option. Enter your IMAP server credentials and apply filters if needed, such as date range or duplicate removal. Finally, click Convert to start the migration. The tool securely transfers emails, attachments, and folders while maintaining the original hierarchy, without requiring Microsoft Outlook installation.