[Branda Pro] Set Unsubscribe-Header in Branda Pro

In June, all mass emails sent out will have to set the unsubscribe-headers in emails to show a one-click button unsubscribe. Otherwise, Google will Reject these marketing emails as spam.

https://support.example.com/a/answer/81126?hl=en#subscriptions&zippy=%2Crequirements-for-sending-or-more-messages-per-day

Please add the ability to set the unsubscribe headers with Branda Pro so that I can ensure all emails sent from my site are compliant.

To set up one-click unsubscribe, include both of these headers in outgoing messages:

List-Unsubscribe-Post: List-Unsubscribe=One-Click
List-Unsubscribe: <https://solarmora.com/unsubscribe/example&gt;