Google Takeout now lets you export your calendars and it will soon add a similar feature for Gmail. The calendar exporting feature is not new - you could find it in the Google Calendar settings, but it's nice to see that Google Takeout gets more comprehensive and adds support for new services.
The Gmail exporting feature is completely new and it will be gradually released next month. It will let you download a big MBOX file you can import in mail clients like Outlook, Thunderbird or Apple Mail. You can also use this feature to backup your Gmail messages and read them offline.
"You can download all of your mail and calendars or choose a subset of labels and calendars. You can also download a single archive file for multiple products with a copy of your Gmail, Calendar, Google+, YouTube, Drive, and other Google data," informs Google.