From Understanding RAR to Finding Yours

Apr 28
2 min read

Why Knowing Your Reachable Audience Changes Everything

Knowing your number is where the work starts.

What Reachable Audience Ratio Actually Measures

The concept of a reachable audience ratio is pretty straightforward.

Reachable Audience Ratio — RAR — measures the percentage of your total database that can actually be reached through owned channels. Not everyone who has ever opted in or been added to a list, but the portion that has demonstrated, through some form of recent activity, that they are still there.

Knowing that distinction matters. Knowing your number is where the work starts.

How to Calculate Your RAR

Here’s how to pull it.

Go into your email platform and pull 90 days of activity.
Count the unique individuals who opened, clicked, visited, registered, or submitted a form during that window.
Not total opens. Not total clicks. Unique people who took any action at all.
That number is your reachable audience.
Divide it by your total database size and you have your RAR.

What Most Publishers Discover

For most publishers running this calculation for the first time, the number lands somewhere between 15 and 30 percent. A database of 80,000 contacts with 16,000 unique active engagers is not unusual. Neither is the silence that follows when a team sees that number for the first time.

The discomfort is useful. It means the number is doing its job.

Why Inactive Records Matter More Than You Think

But there’s a second implication that goes beyond measurement. Those inactive records aren’t just dead weight in the file 2014 they’re pulling down inbox placement for the readers who are actually paying attention.

The inactive portion of the database isn’t just dormant. It’s actively working against the engaged portion.

Mailbox providers evaluate senders based on how recipients behave. When a growing share of a file never opens, never clicks, and never responds in any way, the signal attached to every send weakens — including for the subscribers who are actually engaged. Inbox placement becomes less reliable for the readers who are paying attention, because the inactive majority keeps diluting what the engaged minority is doing.

Why RAR Is About Protection, Not Just Measurement

The reachable audience isn’t just the portion worth measuring.

It’s the portion worth protecting.

Once teams understand that, the RAR calculation stops feeling like a report on what’s been lost. It starts feeling like a map of what’s worth building on.

RAR Calculation Framework

Step	Action	Outcome
Activity window	pull 90 days of activity	identify recent engagement behavior
Unique engagement	count the unique individuals who opened, clicked, visited, registered, or submitted a form	determine your reachable audience
Final calculation	divide it by your total database size	you have your RAR

The Bottom Line