I think the app is good to go, but there should be a different option other than the link to login. nnUsername and password would be a good solution. As said, nothing against the login link in an e-mail.

This application it's fantastic, I'm using email with password and social login, they work perfectly. I also had the same problem in the past, now solved. Thanks to Ecwid

As others have said, needs a whitelisting as too often goes to junk on emails. Are the developers actually doing any updates on this app, as hasn't been changed in years?

like others have said, its a great app, but needs to have an actual optin integrated . i made it work by adding a field requiring e mail, but i feel customer goes to great lengths by the end of the "purchase" of a "free" guide from my store..