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Three registers — workplace email, Slack, casual conversation

Lesson 1 of 3 in Code-Switching — Formal, Informal & Inclusive Register · 22 minutes

The same message looks completely different across formal email, Slack, and casual conversation. This lesson covers how to recognize and produce each register.

What you'll learn

  • Identify formality registers in writing
  • Recognize when each register fits
  • Adjust the same message across registers
  • Avoid register mismatches

From the lesson

Code-switching is the skill of adjusting your language to fit your audience. The same idea — 'I need help on the Q3 report' — sounds different in an email to your manager, a Slack message to your teammate, and a coffee chat with a colleague. Strong professionals adjust seamlessly. This lesson teaches the recognition and the production.

1. The three primary registers

Register 1 — Formal: • Used in: Cover letters, formal emails to senior leaders, official documents, public communications. • Sentences: Complete; no abbreviations. • Vocabulary: Professional, sometimes elevated. • Tone: Respectful, measured, sometimes restrained. • Greetings/closings: 'Dear Mr./Ms. [Surname],' / 'Sincerely,' /…