We do not provide your actual email to mailers, ever.
In the cases where we submit your opt-out request to a mailer via email, we proxy your email. This means we send the request via a non-identifying system email.
Any mailer response received by our system is routed and sent back to your original email address.
In certain limited cases we do provide your phone number to a mailer within an opt-out request. We only do this when it is a mailer requirement to opt-out of direct paper mail.
We also only provide your phone number to verified mailers that commit via their own privacy policies not to resell this data point.