I'm trying to move some old Outlook emails stored as MSG files into Gmail. I don't want to manually open and forward hundreds of messages, so I'm looking for a more practical migration method.

The MacSonik MSG Converter Tool supports migration from MSG files to Gmail and several other services, including Office 365, Yahoo Mail, Outlook, iCloud, and IMAP-based email accounts.

What interests me most is the ability to process multiple MSG files together. The tool also lets you choose which emails to migrate using a date range, which would be helpful because I don't need my entire archive in Gmail.

I'm also concerned about attachments. Some messages contain important documents, so preserving them correctly is essential. The preview option should make it possible to check the messages before beginning the migration.

Has anyone here tried migrating a large MSG archive directly to Gmail? I'd appreciate recommendations on what to check before starting the process.