Sender Score: Credit Scores for Emailers Yesterday, I wrote about email authentication, and why, although it’s great, it won’t stop spam without the emergence and scaling of accreditation and reputation systems. Today, Return Path has announced the beta launch of Sender Score, our new reputation management system. Sender Score is a groundbreaking service that we’ve been working on for a long time here. The best way to think about it (or the analog analog, as Brad might say) is as a FICO or credit score for email. We’ve gone out and compiled TONS of data about emailers, much as the credit bureaus do when they gather financial profile and transaction data about individuals and businesses. But our data, when aggregated…