Glossary
Outbound, defined plainly
What the words actually mean, written for someone who has to make the thing work.
Answering machine detection
Answering machine detection is a probabilistic decision, not a perfect read of who answered. Learn what AMD measures, why it misclassifies calls, and what
Catch-all domain
A catch-all domain accepts mail for unknown recipients, so a positive verdict does not confirm that a person's inbox exists.
Email warmup
Email warmup is a sending-control system, not a score you buy. Learn the difference between shared-pool activity and per-mailbox reputation.