+# Test EmailInputEncodings PostLoadCheck code
+RT::Config->Set('EmailInputEncodings', qw(utf-8 iso-8859-1 us-ascii foo));
+my @encodings = qw(utf-8-strict iso-8859-1 ascii);
+
+warning_is {RT::Config->PostLoadCheck} "Unknown encoding 'foo' in \@EmailInputEncodings option",
+ 'Correct warning for encoding foo';
+
+my @canonical_encodings = RT::Config->Get('EmailInputEncodings');
+is_deeply(\@encodings, \@canonical_encodings, 'Got correct encoding list');