We are sorting out the SPF record, thanks! And what to do with users? Where does the plugin record them? We don’t see them in the admin panel, but it says that the user exists… Try adding an address to the subscription form on the main page, for example: dm-cleaning@dahamaster.org We added this address recently, but we don’t see this user in the admin panel… The subscription form itself is here: https://dm-carpentry.ru/