This looks nice, but requiring an email during setup, with no explanation or discernible reason - and demanding a work email at that - seems very creepy. This decision alone removes my trust in your product and your company, sorry.
Requiring a work email is a common tactic for B2B sales, so that sales people can contact you and try to get you to buy. This doesn't seem like a B2B kind of product, so it does seem... odd.
We should probably add this explanation to the login page because I can see how this would be confusing.