### Summary According to some analysis done by @tszuromi, some users are getting stuck in the confirmation step when email registration is required. This is seen by a loop that looks like: * `/users/confirmation/new -> /users/almost_there -> /users/confirmation/new -> /users/almost_there -> /users/confirmation/new -> /users/almost_there -> /users/confirmation/new -> /users/almost_there -> /users/confirmation/new -> /users/almost_there` We should diagnose this problem and fix it. ### Steps to reproduce   Currently if you don't get a confirmation email you can try to send it multiple times. ### Proposal TBD