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 Classroom Secrets.
Thank you for contacting Classroom Secrets, this is just a quick note to say your email has been received.
Someone from our customer service team will review it and respond shortly.
Due to the current coronavirus situation all of our staff are working from home so we have had to change our opening times to accommodate this, as a result it may take up to 48 hours until you receive a reply.
Thank you for your understanding.
Kind Regards, Classroom Secrets Customer Service Team.