Streaming Giant's 99.92% Bounce Rate Crisis

The largest streaming platform on Earth (…maybe Mars soon?) almost got wiped out by a bounce rate. Not a typo. Their trial signup bounce rate went from 8% → 0.08% in 24 hours. But not because things were good. Because things were disastrously bad. Here’s what happened: → They were getting 10s of millions of bogus signups per day. → Their 3-step trial flow was under attack. → Their double opt-in email confirmations were bouncing. → And their ESP was threatening to shut down their entire sending domain. Let me repeat that: The world’s biggest streaming platform was 24-48 hours away from losing their ability to email new users, existing users, and paying subscribers. All because of a surge in fake accounts that tanked their sender reputation. So what did we do? We stepped in and stopped the bleeding instantly. - Rebuilt the verification flow - Blocked the bot networks - Cleaned the pipeline - Restored sender reputation - Stabilized their ESP relationship - And processed billions of verifications to harden their system permanently Result? Bounce rate: 8% → 0.08% overnight. ESP off their back. Onboarding fixed. Billions saved in future fraud. Most people underestimate the importance of email deliverability. Companies at global scale know it’s a matter of survival. Curious… what’s the worst email or signup related fire you’ve ever had to put out?