I'm helping a client move years of archived MBOX emails into a modern email service, and I'm looking for a solution that can handle the migration without losing emails, attachments, or folder organization. There are plenty of tools available, but many of them seem to have limitations when dealing with large mailboxes or multiple MBOX files.

While comparing different options, I came across MacSonik MBOX Converter. One thing that stood out is its ability to migrate MBOX files directly to popular cloud email services, including Gmail, Office 365, iCloud, Hotmail, and Yandex Mail. It also supports migrating Google Takeout MBOX data, which is useful for anyone exporting data from a Google account.

Another feature I found useful is the option to skip previously migrated emails, preventing duplicate uploads during repeated migration attempts. The software also includes recurring backup options, allowing users to schedule backups without having to run the process manually each time.

For users who don't need attachments, there's an option to back up emails without including them, which can reduce storage usage and speed up the migration process. The mail filter also allows selective migration based on a chosen date range, making it easier to transfer only the emails that actually matter.

Since I often work with mailboxes from different email applications, I like that the software supports MBOX and MBX files from over 20 email clients while maintaining the original folder hierarchy throughout the migration.

Before purchasing, I noticed there's a free trial that allows processing up to 50 emails per folder, which seems like a practical way to evaluate whether it meets real-world requirements.

Try- https://www.macsonik.com/mbox/converter/