You may be asking, "How does this impact me?"
It really doesn't with the exception that you may notice it comes from a different source. Instead of firstname.lastname@example.org it will be email@example.com.
(You may want to ensure proper delivery by ensuring your filters are not placing this very important communication newsletter in your spam folder.)
Otherwise, expect everything to remain the same.
As the process is now, all NEW subscribers need to contact firstname.lastname@example.org to be added.
Any questions, please contact Mary Beth Kluesner at the above email address.