in reply to Re: contact details
in thread contact details

The local part of an email address (i.e., the "PugSA" in "PugSA@example.com") is case sensitive. This is specified in RFC 2821. It's a good idea not to treat your local addresses case sensitively, but it's a bad idea to assume a remote system is not case sensitive until you know otherwise.

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Re^3: contact details
by Argel (Prior) on Jul 16, 2008 at 19:06 UTC
    True, though the spec also mentions that:
    . . . exploiting the case sensitivity of mailbox local-parts impedes interoperability and is discouraged.
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