How to send batch email while keeping recipient addresses private

I’ve been searching for a solution to this issue but haven’t had much luck so far. I’m hoping someone here can provide some guidance.

I need to send bulk emails (e.g., marketing emails) to a list of users while ensuring that recipients cannot see each other’s email addresses. The common recommendation is to use BCC, but this approach can negatively impact IP reputation and increase the likelihood of emails being marked as spam, especially at scale.

I came across Brevo’s batch email guide (link), but it seems that even with this method, recipients can still see the email addresses of others in the final email.

Does anyone have a recommended approach or best practices for sending bulk emails while keeping recipient addresses private?

Thanks in advance for any help!