The 2.0 version of MailChimp Import for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app is an intellectual property of The Rocket Science Group. The program belongs to Communication Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
MailChimp Import is a simple application that lets you export contacts from your Apple address book to your MailChimp subscriber list. With this program, you can view all subscribers from the Apple address book. You can copy e-mail addresses that failed to be imported to the clipboard, and MailChimp will help you design e-mail newsletters and share them on social networks.
You may want to check out more software for Mac, such as Digital Tweaks Outlook Mac Export Import Tool, ToolsCrunch Mac EML to Gmail Importer or Toolscrunch Mac EML to G Suite Importer, which might be similar to MailChimp Import.