
Why Your Business Emails Land in Spam (and How SPF, DKIM, and DMARC Fix It)
Gmail, Yahoo, and Outlook filter mail from domains without SPF, DKIM, and DMARC, and bulk senders must also keep spam complaints under 0.3% and offer one-click unsubscribe. Here is what each DNS record proves, how to publish all three in about an hour, the seven mistakes that keep small-business invoices in spam, and why unread invoices show up in your receivables.






