The e-Restaurant MailChimp integration has been updated to be much more reliable and easy to configure.
Using this integration, any reservations entered through e-Restaurant (or made via the web booking module on your website) which have a valid email address, will be uploaded to your MailChimp mailing list automatically ready for your next newsletter.
The settings for this have been moved to the Administration->Settings screen as shown in the below screen…
To activate the MailChimp uploading, simply enter your MailChimp API key into the top edit box, then select the mailing list you wish to use from the drop down list.
Finding your MailChimp API Key
To retrieve your MailChimp API key (or create a new one) log in to your MailChimp account through your web browser and navigate to Account->Extras->API Keys as shwn below.