Email Etiquette Cheat Sheet

Email etiquette and best practices — subject lines, tone, CC vs BCC, response timing, follow-ups, and professional email writing for the workplace.

Last Updated: July 15, 2025

Email Anatomy

ElementBest Practice
ToPeople who MUST act or reply. Fewer is better — avoids diffusion of responsibility.
CCPeople who just need visibility. If you want action, move them to To.
BCCProtect privacy in large lists. NEVER use BCC to secretly loop someone in — it destroys trust.
SubjectSpecific + actionable. "Q3 Report for Review — feedback by Friday" not "Report"

Response Timing

UrgencyRespond Within
Urgent (client, deadline)1-2 hours during business hours
Standard (internal request)24 hours — even just "On it, will get back by Friday"
Low priority (FYI)Within the week

Tone Fixes

Instead ofWrite
"As I said before...""To reiterate from our earlier conversation..."
"You forgot to...""Just following up on..."
"This doesn't make sense""Could you help me understand...?"

Subject Line Formulas

TypeTemplate
Action needed"[ACTION] Review Q3 budget by Friday 5 PM"
Info only"[INFO] Q3 Results Summary — no action needed"
Decision"[DECISION] Vendor A vs B — need response by Wed"
Pro Tip: If an email thread hits 5+ replies, pick up the phone or schedule a 5-minute call. Email is terrible for nuanced discussion — it amplifies tone misinterpretation and the back-and-forth wastes more time than a quick conversation ever would.
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