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user-interfaceconventionscasing

Should I capture email addresses in lowercase in an uppercase system?

Your opinions please.

In our system the decision was made that all fields (except notes) will be forced into uppercase. I don't like it, but the system's intended users aren't very computer literate, so for line-of-business use I suppose it is acceptable.

When it comes to email addresses however, would you also force them into uppercase, against the lowercase convention?

Solution

  • The part before @ "Local Part" is "locally interpreted" (see RFC 2822 §3.4.1).

    This could include being case-sensitive. Whether any email processing agents support case sensitivity is another question.