We now have a simple contact database importer currently available for MailChimp. No need to export your database, just import it directly from your OutboundEngine account!
Login to app.outboundengine.com and click on the Contacts tab.
At the bottom of the page, click Import Contact(s) from...
Click on the MailChimp logo and a new window will open.
It will prompt you to login to your MailChimp account (if you are not already logged in).
The window will close and you will be prompted to select the "List(s)" you would like to import. If you have more than one list to import, please select each one and then click Import. (The next step will ask you to select the contacts from the "List(s)")
Next you are able to select the contacts to import. You can either select the box at the top right which will select all contacts for import (click the box again to undo).
You can click the box next to each individual contact to be more selective.
Once you have made your selections, click Import.
Then click OK from the Success window and you are done.
Now those contacts are included in my contact database!