Glossary

What is Deliverability?

Deliverability is the share of your sent messages that actually reach recipients' devices, as opposed to being filtered, blocked, or silently dropped.

Deliverability is distinct from delivery reports. A message can be accepted by a provider, reported as sent, and still never arrive. The gap between the two numbers is where most outbound campaigns quietly lose pipeline.

Sending practices drive deliverability more than any single technical setting: pacing, list quality, message variation, and honoring opt-outs all protect sender reputation over time.