This site did not show evidence of storing passwords in plaintext.
This site does allow secured connections (https)
This site did show a clear way to unsubscribe from their emails
This site does verify your email address.
Below is a sample of the emails you can expect to receive when signed up to CoinBulb.
Thank you for registering at CoinBulb. However, before you getting running on the site, you've to confirm your email address. Click here to confirm your account, or copy the link below directly to confirm your email address.