Export Gmail emails to Thunderbird is reliable with Gmail Backup Tool. The tool handles corrupted emails smoothly. It skips problematic items without stopping the process. This ensures full export completion. You can export emails from specific time periods. This helps in legal or business needs. The tool maintains email priority settings. Important emails stay marked. It supports long file names. No truncation occurs. The export speed is consistent. The tool works well on older systems too. Thunderbird recognizes the exported emails without re-indexing issues.