Email infrastructure pricing has barely moved in a decade. Mailgun, Postmark, SendGrid, Resend, all per-email, all clustered in a narrow band. The reason isn't bandwidth, and it isn't storage. It's abuse. Most of what an ESP charges you covers the cost of fighting the senders who shouldn't be on the platform in the first place.
Remove the abuse, and the price collapses.
That's the idea behind GoodSender's Permission Loop. Here's how it works, and why the economics finally let us run the first 100,000 emails a month at $0 and keep the curve flat after that.
The shared-pool problem
Every sender on a typical ESP sits in an IP reputation pool with everyone else on that tier. One bad actor blasts a purchased list, mailbox providers throttle the IPs, and your perfectly legitimate transactional mail starts landing in spam. You did nothing wrong. You're paying for the worst sender on your tier.
