e-words

Don't create new words with e- (for electronic).

It's OK to use e-words, such as e-book and e-commerce, that are included in this guide and in Merriam-Webster Dictionary.

Almost all e-words are hyphenated. Email is an exception.

Lowercase the e in body text, and capitalize the E at the beginning of a sentence or a heading. The letter following the hyphen is capitalized only when title-style capitalization is required, which is rare in Microsoft content.

Examples
(Sentence-style capitalization) E-commerce and security
(Title-style capitalization) Strategic E-Commerce Systems and Tools for Competing in the Digital Marketplace

See also Capitalization