Technically it wasn’t actually an email. it was an update posted on the Indiegogo site that was then sent to me from firstname.lastname@example.org, so maybe you don’t have notifications turned on in your Indiegogo account? And maybe an email will come from the eto people themselves later? It was only sent on the 11th.
They also had this at the end of the update post:
We will soon stop posting updates on Indiegogo, so sign up to our newsletter at www.etowine.com it’s also where you can check out the videos & FAQs for any help with your eto. We love to see your stunning photos of eto so like & post to our Facebook, Twitter & Instagram accounts.
Which suggests they are moving out of their crowdfunding phase.