I understand why email open rate dominates campaign conversations. It appears near the top of the funnel and usually produces a large number.
It is also one of the easiest campaign metrics to misunderstand.
An “open” is typically an image request. The recipient’s mail client requests a tiny tracking image, and the analytics system records the event. That mechanism is affected by image blocking, privacy relays, automatic preloading, caching, and security scanners.
The event happened. Its interpretation is weak.
A Request Is Not Attention
The tracking system can honestly say that a pixel was requested. It cannot infer how long the message was read, whether the recipient noticed the offer, or even whether a person initiated every request.
This does not make open tracking worthless. It can expose gross delivery problems and broad changes over time when the surrounding conditions are stable.
It should not be the headline proof that a campaign worked.
Clicks Carry More Intent
BDC campaign links pass through a controlled redirect before sending the visitor to the intended destination. That creates a stronger event: someone or something requested a specific call to action associated with a campaign and asset.
Clicks still need care. Automated scanners can follow links, and a click does not equal a lead. But the action is closer to expressed intent than a passive image request.
If the destination is also instrumented, session behavior adds another layer. Did the visitor leave immediately? Did they continue into inventory? Did they return?
Each step strengthens the evidence without turning it into a sale that the system cannot observe.
Reporting Should Reflect Signal Strength
I would rather lead a campaign report with the strongest available signals:
- Tracked destination visits.
- Clicks by call to action.
- Engagement on controlled landing pages.
- Comparisons between asset and campaign families.
Open activity can remain as context, clearly described as a weak signal. Partner-reported leads or appointments belong in their own labeled section.
The Number Is Not The Problem
Email opens become misleading when a measurement mechanism is presented as a human behavior.
Good analytics preserves the distinction. A pixel request is observable. Attention is inferred. A click is observable. Intent is inferred. A sale may be partner-reported or entirely outside the system.
The dashboard becomes more credible when the biggest number is not automatically treated as the best one.