Beta
Test the email on a panel of your subscribers.
Rehearsal runs your draft past simulated versions of real contacts from the audience you picked. Each one reacts in its own words, and you get predicted open, click and unsubscribe rates before anything is sent.
Beta, on Pro and Business plans. Predictions are estimates, and they say so on screen.
Campaign builder
Rehearsal, 10 digital twins
Sample data
Opens
38%
range 24 to 52%
Clicks
6%
range 2 to 11%
Unsubscribes
0.8%
range 0 to 3%
Frequent buyer
click
"Clear offer, and the deadline feels real."
Hook: Ends Sunday
Browsed, never bought
skim
"The button sits below the fold."
Friction: Shop the sale
Suggested fix: shorten the subject line | Apply
10
twins in a Quick rehearsal
25
twins in a Thorough rehearsal
2
variants compared when A/B testing is on
72
hours after sending before a campaign is used as the reference
In the campaign builder
Pick a sample size and run it
The Rehearse with subscriber digital twins panel sits under your draft. It uses the subject, preheader, content and sender name you have set, and the lists or segments you are sending to.
Quick samples 10 contacts, Thorough samples 25
Change the subject or body and run it again to see the difference
Running the identical draft twice shows the saved result instead of a new one
Review and send
Beta
Rehearse with subscriber digital twins
Simulate how a focus group of your real subscribers would react to this email, before you send it.
Sample
Quick (10)
Selected
A/B test
Compare A/B
On
Run rehearsal
Twin reactions
Frequent buyer
click
"I know what I get and when it ends."
Hook: 20 percent off until Sunday
Browsed, never bought
skim
"Nice subject, but I stopped at the second image."
Friction: Our spring range is back
Lapsed contact
unsubscribe
"This is the third sale email this week."
Friction: Last chance, really
Reactions
Read what each twin did and why
Every twin picks an action: ignore, skim, read, click, reply or unsubscribe. It also quotes the line that pulled it in and the line that put it off, so you can point at the sentence to change.
Individual reactions can be shown or hidden
Hook line and friction line for each twin
One surprising reaction is called out when it stands out
Results
Rates, cohorts and A/B side by side
Open, click and unsubscribe predictions come with a range. If the sample has more than one type of subscriber, a cohort table shows how each group responded. With A/B on, you switch between Variant A and Variant B.
Rehearsal results
Variant A, 31% opens
Variant B, 38% opens
Predicted opens
31%
range 19 to 45%
Predicted clicks
5%
range 2 to 10%
Predicted unsubscribes
0.6%
range 0 to 3%
Cohort
Share
Opens
Clicks
Unsubs
Frequent buyers
40%
75%
50%
0%
Browsed, never bought
40%
50%
25%
0%
Lapsed contacts
20%
0%
0%
50%
Fixes
Apply the suggestion or ignore it
The summary opens with one headline, lists the top friction points and proposes fixes. Apply on a subject or preheader fix rewrites that field. A body fix gives you rewritten copy to use with the AI block rewrite.
Fixes are suggestions, nothing changes until you click Apply
Run the rehearsal again to see whether the change helped
Rehearsal summary
Twins liked the offer but several lost the button below the first image.
Suggested fixes
Shorten the subject line
Subject
Apply
Rewrite the preheader
Preheader
Apply
Move the button above the fold
Edit in the builder
Body
Top friction
3 of 10 twins
The second image pushes the button off the first screen.
How to use it
Three steps in the campaign builder
01
Finish a draft
Set the subject, preheader and content, and choose the lists or segments you are sending to.
02
Run the rehearsal
Choose Quick or Thorough, switch on Compare A/B if you have a test, and click Run rehearsal.
03
Fix, then send
Apply the fixes you agree with, run it again if you like, and schedule or send as normal.
How accurate is it
Where the numbers come from
This is a beta feature. The twins react to your draft and to your last settled campaign, and the result is scored against what that campaign really achieved.
Your last campaign
The same twins also react to your most recent campaign that has settled. Your draft's rates are that campaign's real results, moved up or down by how the twins reacted to the two emails.
Two steps, like a real inbox
Each twin first decides whether to open from the sender, subject, preheader and the time the email lands in its own time zone, then reads the email with buttons and images in place. Groups are weighted by their share of your audience.
A confidence rating
Every result says how far to trust it and why, for example when many subscribers are new with little history. Unusual subscribers are shown as edge cases and not counted in the rates.
Without an earlier campaign
It falls back to your audience history, your account average or an industry average, and marks the result as low confidence. Once rehearsed campaigns have been sent, predictions are also calibrated against their real results.
FAQ
Questions, answered
Are digital twins real people?
No. They are simulations based on contacts in the audience you chose. Nothing is sent to anyone during a rehearsal.
Which plan includes it?
Digital twins are available on the Pro and Business plans. It is a beta feature in the campaign builder.
How many twins can I use?
A Quick rehearsal uses 10 and a Thorough rehearsal uses 25.
Can I rehearse an A/B test?
Yes. When A/B testing is on for the campaign, tick Compare A/B and switch between the two results.
Rehearse your next send
Open the campaign builder, finish a draft and click Run rehearsal.
No credit card required. Free plan available.