Instantly
Instantly campaign paused for bounces?
Why Instantly pauses at 5%, what to do right now, and how to stop it happening again.
SmartleadSmartlead bounce protection explained
It's off by default, and its formula makes early bounce rates look lower than they are.
DeliverabilityHow many bounces burn a domain?
The real thresholds: what each sending platform enforces, and what's actually safe.
Catch-allCatch-all emails: send or skip?
What catch-alls are, how often they bounce, and a safe way to send to them.