The measurement question comes before the dashboard
A metric is useful only when its denominator matches the decision. An email open rate describes recipients included in an email send. Meeting attendance describes invited people whose presence was recorded. An audio completion rate describes listeners who started an episode.
None of these numbers automatically represents the whole workforce or proves that a message was understood. The first step is to define the intended audience, then map who could realistically access each channel.
Move from intended audience to action
1. Intended audience
Name the people who should receive the message. Segment by role, location, language, shift or team when their access conditions differ.
2. Realistic access
Record whether each group can use the channel in its actual working context, including device, login, inbox, app, shift overlap and manager dependency.
3. Delivery
Confirm that the channel accepted or delivered the message. Delivery is a technical event, not evidence of attention.
4. Attention or consumption
Use opens, attentive reading, attendance, starts, completion or time spent according to the channel. Keep the denominator visible.
5. Understanding
Ask a short question, pulse survey or manager check. A click, open or completed episode does not prove comprehension.
6. Action or outcome
Measure the requested behaviour when it is observable. Treat wider engagement or business outcomes as separate measures with many possible causes.
What each channel metric can and cannot show
Delivery rate
Shows whether a system accepted the message for the addresses or devices in scope. It does not show attention or whether people outside that addressable audience had another route.
Open rate and attentive reading
Show activity among email recipients using the measurement rules of the email platform. Privacy controls, image loading and client behaviour can affect the event.
Clicks
Show interaction with a tracked link. A message with no link can still be useful, and a click does not prove understanding.
Attendance
Shows presence at a live or recorded event when attendance is captured. It does not establish attention throughout the session.
Audio starts and completion
Show playback activity for invited listeners. They provide format-specific evidence, not proof that the listener understood or acted.
Read email results in context
PoliteMail's 2026 benchmark aggregates more than two billion internal emails sent to roughly 11 million employees. It reports a 66.2% average recorded unique open rate, and 83.7% of opens met its attention rate threshold under the provider's methodology.
These figures show why email remains an important part of internal communication. To understand your own results, also check which teams were included in the measured audience and which colleagues need another way to get the update.
Explore these findings in the report highlights, where you can download the full report with its sources and limitations.
Map access before calculating a rate
Start with a count, not a percentage. For one recurring message, list every intended group and document whether at least one asynchronous channel is realistically available. Mark the answer as verified, partial or unknown.
Define
Which people should receive this message, and why are they in scope?
Verify
Which channel can each group access in practice, and what evidence supports that answer?
Count
How many intended people have verified access, partial access or an unknown access path?
Investigate
Treat unknowns as discovery work. Do not label them disengaged or unreachable without evidence.
Keep the scorecard focused on what you can improve
For each critical recurring message, record:
- Intended audience and segment sizes.
- Verified, partial and unknown access paths.
- Delivery and consumption metrics by channel.
- One understanding or feedback signal.
- The requested action, when measurable.
- Owner, follow-up and next review date.
Do not collapse the layers into one engagement score. Separate numbers make it easier to see whether the problem is access, delivery, attention, understanding or action.
Common mistakes when reading the numbers
- Calling opens workforce reach.
- Calling completion understanding.
- Calling attendance attention.
- Comparing percentages with different denominators.
- Using consumer podcast benchmarks for employees.
- Assuming an unknown group is disengaged.
- Attributing a business outcome to one message or channel.
Frequently asked questions about internal communication metrics
What is the most important internal communication metric?
There is no single universal metric. Start with the intended audience and the decision you need to make, then choose separate measures for access, delivery, attention, understanding and action.
Is email open rate a workforce reach metric?
No. It shows recorded opens among the email audience being measured. It tells you nothing about colleagues outside that audience, so list who was included before treating it as a company-wide result.
Does audio completion prove understanding?
No. Completion shows playback activity under the platform's measurement rules. Use a question, survey, manager check or observable action when understanding matters.
How should desk and non-desk groups be compared?
Look at the same message and check how each group can get it. Compare access and activity within each group. An office email open rate cannot tell you how well a shift briefing worked for a warehouse team.
How do we measure a new communication format?
Choose one message and one team. Record how they get the update today, then compare use, feedback and the result you care about after a few updates. Include publishing time so you can judge the effort as well as the response.
Give your next update a voice
Turn a document into a private audio update, share it with your team and follow listening activity in Brandscast.