MailChimp is an email marketing service provider, founded in 2001. It is a web-based application, although data can be downloaded and for some features there is an offline application. It has 3.5 million users that collectively send over 4 billion emails a month through the service. Mailchimp can be easily integrated with LiveAgent.

Connecting Mailchimp with LiveAgent will allow you to subsribe and unsubscribe contacts to your email marketing lists directly from the ticket interface. Subscribing contacts is easy, however an opt-in email is required and your contact has to confirm the subscription.