Questions about your service

Em cada plano, quantas interações são permitidas? E quantos emails posso cadastrar? 

Em cada plano, quantas interações são permitidas?

I suggest you to check the following page: http://www.jotform.com/pricing which contains all the information about our plans.

If by interactions you mean submissions then free users are allowed to receive 100 monthly submissions, premium users are allowed to receive 1000 monthly submissions, economy users are allowed to receive 10,000 monthly submissions and professional users are allowed to receive 100,000 monthly submissions.

E quantos emails posso cadastrar? 

I'm not sure if I understand your question correctly. I mean, you can create sub-users that would also have access to your forms, is this what you're referring to? or?

If you've further questions, please let us know.