It looks like you're new here. If you want to get involved, click one of these buttons!
I built a quick Wordpress plugin that allows you to subscibe users to any list on your Sendy installation when they register on your Wordpress site (not really a syncronization thought)
Thought some of you might find it useful so I post it here : http://wordpress.org/plugins/sync-to-sendy/
Thanks for sharing Romain. :)
Also for the benefit of other users who stumbled upon this post and wanting a general purpose Sendy Wordpress plugin, here it is → http://wordpress.org/plugins/sendy-widget/