Review includes Test campaign. It dry-runs up to 5 sample leads from your primary list and does not send LinkedIn messages. Use it before you Launch.
Run Test campaign
The test is a read-only simulation. It creates no enrollments and does not message anyone on LinkedIn.
Open the campaign and stay on Review.
Confirm Settings already has a primary list and at least one sender. The test samples that list.
Select Test campaign. The button reads Testing... while it runs.
Read how many of the sample would enroll. The page can say "{included} of {sampleSize} sample leads would enroll".
Fix skips or blocks, then test again if you changed Audience, Senders, Schedule, or Exclusions.
The empty state under Campaign test says "Run a dry-run on up to 5 sample leads from your primary list. No enrollments are created." That is the whole job: preview who would enroll, not send.
Use it before Launch
Launch campaign is a separate button on the same Review header. Test does not replace Review blocks. If InMail or Find email is still on the graph, Review still blocks launch. InMail cannot launch. Switch those steps to Message or remove them, then test the launchable graph.
Send hours you can edit live on campaign Settings → Schedule, not on the sender. If the dry-run shows schedule or exclusion skips, open Settings and change those, then test again.