Glossary
The percentage of recipients who open a message out of those it was sent to.
Open rate is the share of delivered messages that recipients actually open. It reflects how well a subject line, sender, or notification prompts people to engage, and serves as a top-line indicator of attention.
Chat channels like WhatsApp typically show dramatically higher open rates than email, because messages arrive as personal notifications people are accustomed to reading promptly.
Open rate is a leading metric: it sets the ceiling for how many people can click and convert.
If messages aren't opened, nothing else happens; open rate is the first gate to every result.
Defuser AI sends on high-open-rate chat channels and tracks engagement — see WhatsApp marketing.
The percentage of recipients who open a message out of those it was sent to.
If messages aren't opened, nothing else happens; open rate is the first gate to every result.
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