Subscribe Via Getresponse Available In Any Plugins?

Are there any wpmudev plugins that connect with Getresponse? I loved 'Slide In' but it only connects with Mailchimp. Is it possible to have it connect with Getresponse via the Getreponse API?

I use Getresponse as my autoresponder service and would like to have users subscribed automatically to Getresponse when they sign-up at my site. Or if not automatically, have some other plugin to let them subscribe.

So, if anyone is using the plugins with Getresponse...could you please let me know which ones.

Thanks in advance!