[Due for payment 2025-09-16] [$250] [New Email Design Sys] Combine DM / Group chat Intro lines

[Beamanator]

Part of the "Create and implement an email design system" project

Main issue: https://github.com/Expensify/Expensify/issues/455083
Doc section: N/A - internal issue here: https://github.com/Expensify/Expensify/issues/484532#issuecomment-2796746886
Project: Create and implement an email design system

Feature Description

1. These two lines of text are currently split into two lines of text, one ("This chat is with...") above the other ("Use the + button..."). We should just put them all on the top line so it doesn't take up more vertical space than necessary:

DM

Group

2. The + symbol should be replaced with a mini green FAB

Note: ^ this step is on HOLD

Manual Test Steps

1. Start new DM / Group chat with someone
2. Notice the intro text line(s)

Automated Tests

Upwork Automation - Do Not Edit

• Upwork Job URL: https://www.upwork.com/jobs/~021911735277403082175
• Upwork Job ID: 1911735277403082175
• Last Price Increase: 2025-10-07
• Automatic offers:
• samranahm | Contributor | 107152033

Issue Owner

Current Issue Owner: @JmillsExpensify

[melvin-bot]

Current assignee @shawnborton is eligible for the Design assigner, not assigning anyone new.

[melvin-bot]

Job added to Upwork: https://www.upwork.com/jobs/~021911735277403082175

[melvin-bot]

Triggered auto assignment to Contributor-plus team member for initial proposal review - @s77rt (External)

[waylon-dev]

Hi Beamanator,
I'd like to work on this issue, but the links are returning a 404 error.
Could you please check and update them?

Thanks!