Open Rate
Definition
The open rate counts measured open signals in relation to emails.
The proportion of delivered or sent emails for which an open signal was measured; the exact definition varies.
Simply explained
It shows the proportion of the considered messages for which an opening was technically registered.
Why it matters in practice
The term is relevant for systematically improving digital visibility, qualified traffic, and content findability.
Example from business
Newsletter trends are evaluated together with clicks, replies, and unsubscribes.
Limits and pitfalls
- Use openings as exact reader numbers or as the sole quality metric.
Origin & history
Tracking pixels made open rates widespread; privacy features and image blocking limit their meaningfulness.
Use in mid-sized companies
- Possible example: Newsletter trends are evaluated together with clicks, replies, and unsubscribes.
Frequently asked questions
What does Open Rate mean?
The proportion of delivered or sent emails for which an open signal was measured; the exact definition varies. What mistakes should be avoided? Use openings as exact reader numbers or as the sole quality metric.
Sources
Source checked on 10.10.2026. Editorial application examples are hypothetical; no evidence of real customer results.
Editorially reviewed on: