i have a question, everyone use gmail only ?? because i can`t sign up with yahoo or hotmail, I don`t receive a confirmation email, it is not in the spam folder. 
Why not try Gmail? It's more sophisticated and so far there are hardly any issues with receiving emails. Even if the email is suspected as Spam, it would still fall in the appropriate folder.
It does not matter, for the coinpot email server is not working.