Every now and then I let a software company that supplies enterprise software know that their marketing emails are going to spam because their marketing email p

Every now and then I let a software company that supplies enterprise software know that their marketing emails are going to spam because their marketing email provider doesn't have an spf record on their domain. They know me personally but still never reply. I told the same company that the certificate had expired in one of their sub-domains. It intrigued me that the first 3 of their tech team didn't know what that meant. Still they never said thank you.