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.
Membership Emails
Below is a sample of the emails you can expect to receive when signed up to OpenCPN.
This address has been used to register a Flyspray account. If you were not expecting this message, please ignore and delete it. Go to the following URL to complete your registration:
Username: Your confirmation code is: 8e097bceb6ca78d88c40
You are receiving this message because you have requested it from the Flyspray bugtracking system. If you did not expect this message or don''t want to receive mails in future, you can change your notification settings at the URL shown above.