Email Capitalization
The generic word “email” is normally lowercase in running text and is not hyphenated in Microsoft style. Capitalize “Email” only when ordinary sentence or heading position requires it, or when a proper name or interface label has its own casing.
Write “email” lowercase in ordinary running text. Capitalize it at the start of a sentence or heading, or when a proper name/interface label requires different casing.
Key details
Important caveats
Position Boundary
Initial capitalization is normal at the beginning of a sentence or heading and does not make “Email” a generally capitalized common noun.
Further guidance
Practical Application
Write “email” lowercase in ordinary running text. Capitalize it only where normal sentence/heading capitalization or an official interface/proper-name form requires it.
Reader Check
Is “email” ordinary prose, or is it at a sentence/heading boundary or inside an official label?
Running Text
Microsoft uses the unhyphenated lowercase form “email” in ordinary running text.
Worked Example
Running text: “Please send the receipt by email.” Heading: “Email preferences.” Do not capitalize every occurrence merely because email is a technology term.
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.
- email — Microsoft Style Guide (opens in a new tab)Microsoft · Microsoft house style for email spelling and capitalization