spam complaints

Hey, Al! My company has sent approximately 200,000 email messages in the past month to Yahoo! Mail recipients, but we haven’t received even a single complaint back via our ISP Feedback Loop. Is that normal?No, that is not normal! If you’re sending mail en masse, you’re going to get some non-zero number of complaints back. Even if it’s all fantastically opt-in and there’s no chance of somebody getting an unwanted email message, Yahoo’s ISP Feedback Loop, which they call the Complaint Feedback Loop, is always going to faithfully report along any complaints it is given, and that always will include a low number of complaints from people who truly did sign up for the email message. (Keeping in mind that a complaint isn’t what kills your deliverability dead; it’s a high number or high percentage of complaints that does it.)Thus, I suspect something is broken. Probably something on this checklist:You’re not