How can users convert MSG files in bulk?
Bulk MSG conversion usually involves selecting a folder containing multiple files, scanning the available messages, choosing PST as the destination format, and starting processing. The exact interface differs between utilities, but the basic workflow remains similar. Before bulk conversion, organize source files and confirm that enough storage is available for the resulting PST. It is helpful to test several messages first, especially when attachments or unusual formatting are involved. During processing, avoid moving or renaming source files. When conversion finishes, open the PST and verify message counts, folders, attachments, dates, and formatting before deleting or archiving original MSG files for easier handling.
https://www.vartikasoftware.com/product/vs-msg-to-pst-converter-software.html
MSG to PST Converter – Convert Multiple MSG Files to PST Format