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 Convertio.
Thank you for registering for Convertio! We noticed you failed in completing your sign up, but donít worry - youíre almost done! Continue Sign Up
Did you experience any technical problems upon your sign up process? If so, please check out our knowledge base: https://support.convertio.co or contact us at: firstname.lastname@example.org
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