> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# sendTestBroadcast

> Sends the broadcast to the Slack channels you name, up to 10, so you can see what recipients will
get before the real audience does. It goes out through the same pipeline as a real send, under the
broadcast's own sender, so what arrives is what any channel would have received — with a notice
at the top marking it as a test, since everyone in the channels you choose will see it.

Every channel must already be connected to this workspace. They are independent of the broadcast's
own audience, which is left untouched: the broadcast needs a sender and a notification title, but it
does **not** need any channels of its own, because testing is what you do before choosing them.

Only available while the broadcast can still be edited: once its send has started, it can no
longer be tested.

A test send never changes the broadcast's `status`, and never unlocks or locks editing. Requires
the `broadcast:send` permission.