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GROWTH DEPT.CRO

Email and SMS

Send the message that gets the click

Split one email or SMS template between two versions, recipient by recipient, and let the results say which to keep sending.

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AEmail · 50%

Your routine is waiting

Opened41.2%

Clicked3.1%

BEmail · 50%

Sam, 14 days to clearer skin

Opened44.9%

Clicked3.8%

How message tests work

Two versions, one sender, a clear winner

Your sender asks

Before each send, your sender or agent asks the API which version a recipient gets. One recipient always gets the same version.

Events come back

Report delivered, opened, clicked, replied and unsubscribed events, by message id or recipient.

A recommendation

Email tests the open rate then the click rate; SMS the reply rate then the click rate. A version is recommended after 100 sends of each and a significant result.

What you can do with message tests

Test subject lines, copy and timing

Email

Subject lines and copy

Two versions of one template, split by the share you choose.

API

From any sender

Any email or SMS tool, or an agent, can ask for the version and report events.

Privacy

No addresses stored

A recipient's email or phone is hashed with your brand's own key and never stored.

Message tests work with your sending tools

ShopifyOrders, themes, checkout and the pixel.
KlaviyoTest groups on your Klaviyo profiles.
SlackTest notices in a channel you pick.
Growth Dept agentsYour brand's own agent answers in the app.
Growth Dept CRO APICreate tests and read results from code.
See every integration

Built for every role

Every team that sends messages can test them

Growth and brand marketers

Test the subject line of a win-back email before it goes to the whole list.

    How marketers use it

    Why Growth Dept CRO

    Why brands test messages with Growth Dept CRO

    Capability

    Growth Dept CRO

    Recipients, not sends

    Results count each recipient once, with a two-proportion test and a chance that B beats A.

    No addresses stored

    Recipients are hashed with your brand's key at once.

    Scoped API keys

    A key with the messages:write scope can assign and report, nothing more.

    Winner for everyone after

    A completed test answers every recipient with the winning version.

    Every feature

    Find out what is worth testing on your store.

    Book a 45-minute call with the Growth Dept team. We look at your store and your traffic, and tell you which tests to run first.

    Book a call