A couple of suggestions for the website Answered
When I click on an article in the email and come to the site, it looks as if I'm logged in but nothing works because I must log out and log back in to make the site recognize me. The email click should bring me to a login page and then take me to the clicked-on article.
Also, adding something to a collection is awkward, with the roll-down top bar coming into view only when you scroll down and then stepping through several clicks. Compare how natural it is at thingverse. This is how it should work.