Good Morning, Good Afternoon, and Good Evening in Emails
“Good morning,” “Good afternoon,” and “Good evening” can work as professional email greetings. Their suitability depends on formality, relationship, timing, and audience; neutral greetings such as “Dear” or “Hello” remain useful when delivery time is uncertain.
Time-of-day greetings are acceptable in professional email; use them when they fit the relationship and timing, and prefer a neutral greeting when timing is uncertain.
Key details
Important caveats
Scope Boundary
Email is asynchronous, so a time-of-day greeting may be read later or across time zones. It remains a tone choice rather than a grammar requirement; “Dear,” “Hello,” or another neutral greeting may be better when timing is uncertain.
Further guidance
Application
Add the recipient’s name or title where appropriate, and match the greeting to the relationship and expected level of formality.
Core Rule
“Good morning” and “Good afternoon” are accepted professional email greetings in multiple institutional guides, and some university guidance also includes “Good evening.”
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Everyday English: Email Greetings — OpenLearn (opens in a new tab)The Open University · Direct guidance that “Good morning” and “Good afternoon” are acceptable email greetings, with formality depending on context.
- Advice for Students Writing a Professional Email — UW–Madison Writing Center (opens in a new tab)University of Wisconsin–Madison Writing Center · Direct guidance on professional salutations, including “Dear Professor X” and “Good morning Dr. X.”