Does Lowercase Matter in Email?

Unlike passwords, email addresses are not case sensitive. Whether or not you add capitals, your email server will read it the same way as long as the numbers and letters match your official email address.

Does lowercase matter in Gmail?

Gmail addresses are not case sensitive, meaning the email service doesn't distinguish between versions of the address with or without capitalized letters, so long as the spelling is the same. Similarly, Gmail addresses will still function if you add dots within the username portion of the address.

Is it bad to type in lowercase?

Typing in lowercase signals familiarity. It says: “We know each other and don't need to be fancy.” Lowercase text can read as honest, unedited, and approaching something like a stream of consciousness — more like actual speech.