# One Message playground and a Learning space for the Sales Brain

> Training a rep's Brain now happens in one Message playground, and everything the Brain learns sits in one Learning space. Earlier training carries over.

Version: v1.602
Date: 2026-09-30
Source: https://doc.checkgrow.com/changelog/v1-602-one-message-playground-and-a-learning-space-for-the-sales-brain

## What this solves

- Message references and the Message playground were two separate ways to train the same voice, and references had to be generated per industry or ICP.
- Real messages lived inside the Personality builder, away from the rest of the training.
- Feedbacks and Lessons were in different places, so it was hard to see what the Brain had learned.

## What changed

- **One Message playground.** Generate a round of dummy messages for sample decision makers from your tracked companies, mixed across message types or one type at a time. They are clearly labelled as training and never sent.
- **Like, favourite, edit or dislike.** Each verdict is saved as Brain feedback, the same way outreach feedback is. Favourites and liked messages have their own tabs.
- **Your messages.** Paste messages you really sent; the Brain and the Personality builder learn your voice from them. Former Real messages and approved Message references move here automatically.
- **Learning.** A left sidebar with the lesson input on top, the three newest lessons and feedback below, and See all for a searchable table filtered by type and status. Knowledge files sit underneath.
- Target audiences and the Personality builder move to the right-hand column.
- In Target → Track, companies open only in the side panel, the company dropdown is gone, and the Filters panel gains an Assignment filter by sales rep.

## Where to find it

Outreach → a rep → Brain. Target → Track for the Assignment filter.

## Useful for

- Reps teaching the Brain their voice in a few minutes a day.
- Managers checking what a rep's Brain has learned.