old emails | WordPress.org

Hi, about the report of old subscriptions I really don’t know, it sounds like some system is scanning old emails and triggering the confirmation links on them… just a hypotesis.

About the delivery problem, it surely related to your provider probably blocking the emails when too many are sent. With 20k email I acn suggest a professional service to deliver, like Amazon SES, Sendgrid, …. With them you have tools to setup the DKIM, SPF and DMARC in the correct way: they’re becoming mandatory by Google and Yahoo.

 

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