Apple Mail Backup All Emails Tool to backup MBOX data files into most common file formats with attached mailbox items without giving popping up an error.
To export Thunderbird to Apple Mail get Thunderbird to Apple Mail Converter tool that is most beneficial utility for exporting mails from Thunderbird to Apple Mail.
Get the backup Thunderbird Mail Folders software is one of the best tool. This software supports all the MS Outlook editions like- 2016, 2013, 2010 and etc.
Import EML to Apple Mail by using the EML to Apple Mail conversion tool that easily solve all troubles like - How to import EML to Apple Mail, How to import EML files to Apple Mail in easy and quick manner.