Here are a couple of simple checks:

die "Your email address is incorrect.\n";  # Will generate some false 
+negatives.
print "Your email address is correct.\n";  # Will generate some false 
+positives.
[download]

Those checks are simple. They won't be correct, but neither will any "simple" email address validation.

Anyway, could you be bothered to read the FAQ?

Abigail