One of the best utility to easily convert Zoho emails to Gmail is the MacSonik Zoho Backup Tool for Mac. This utility helps to backup all Zoho emails to desired file format or email client with high data accuracy. It has a Mail filter feature that helps to convert selective emails of the desired date. It also free up the server space after creating a backup of Zoho emails. The Zoho backup tool maintains data hierarchy and security throughout the migration process.