It doesn’t seem to be my provider. Everything worked great about 2 weeks ago. No changes were made. I am updated to your current version. I backed up and deleted all my contacts. I only have 3 email that are registered. All of them are mine. I tested all 3 emails in Diagnostic and received all test emails. But when I send a real newsletter I only get it to the email which has the same domain that I am sending it from. The other 2 emails are not receiving. I checked the spam folders and nothing.