Disable e-mail newsletters except registration

[Egorkin]

Is it possible to forcibly disable (without the possibility of enabling users) all mailings to users (subscriptions) except for emails to confirm e-mail?

[Marc]

Sorry, Im not sure here what it is you are trying to achieve. Newsletters would only be received by your users if you send them. Therefore if you are unsubscribing everyone, you would simply not create any.

If you are referring to notifications, you can to that from Members->Member Settings->Notifications . When in that area, first of all change the notification types to remove the email option (set it to disabled for each). Once that is done, click to reset all members to default preferences in the top right. 

[Egorkin]

11 minutes ago, Marc Stridgen said:

Sorry, Im not sure here what it is you are trying to achieve.

Yes, I understand you, I will do it! 😊

This is necessary to minimize the number of emails sent via external SMTP during a DDoS attack. To hide the IP address of the server.

[Marc]

No problem. Good luck with solving the problem there

[Randy Calvert]

12 hours ago, Egorkin said:

This is necessary to minimize the number of emails sent via external SMTP during a DDoS attack. To hide the IP address of the server.

Use a third party mail service that integrates via API such as SendGrid.  (There are third party plugins to support others like AWS SES and a few mail gateways.)  In that case your server does not send mail whatsoever.  🙂