Yes, it is possible to convert EML files to MSG on Windows 11. I had a similar requirement when migrating emails and first I tried manual methods. These methods are too slow and don’t support bulk processing. Also, some free tools skipped attachments, which made the results unreliable. To handle this properly, I used GainTools EML to MSG Converter. It allows you to upload single and multiple EML files and convert them into MSG format. This saved valuable time. The best part is that it keeps all email properties intact including metadata and attachments.
So yes, using a proper batch conversion tool makes the whole task easier.

Visit here: https://www.gaintools.com/eml/msg/