To manually Migrate from Gmail to ProtonMail, start by downloading your Gmail data using Google Takeout. This generates a .zip file containing your emails in MBOX format. Next, use an email client like Thunderbird to import the MBOX file. Configure your ProtonMail Bridge to enable integration with the email client, then upload the emails to ProtonMail. While this approach works, it has significant challenges, such as complex configurations, time consumption, and the risk of data loss or incomplete migration, particularly with large email volumes. Additionally, manual steps may not support label mapping or folder structure preservation.

For a seamless migration, the Cigati Gmail Backup Tool offers a user-friendly alternative. This tool enables you to directly backup and transfer Gmail emails to ProtonMail-supported formats with minimal effort. It ensures data integrity, maintains folder hierarchy, and allows selective email migration based on filters such as date, subject, or sender. Additionally, it saves significant time and eliminates manual complexities, making the process efficient and error-free.

By leveraging the Cigati Gmail Backup Tool, users can overcome the limitations of the manual process and ensure a smooth, reliable migration from Gmail to ProtonMail.