What is an invalid email example to test with?

Hello,

I'm integrating Campaign Monitor into my existing contact and newsletter sign up form. Everything works great!

I want to test with an invalid email address so that I'm sure invalid email messages are being handled properly.

Does anyone know of one that would not pass server side validation on Campaign Monitor's servers?

I've tested with a space character and addresses without an at sign and other invalid arrangements.

I'm testing with the testing form action http://YOURSITEADDRESS.createsend.com/t/r/s/xxxxx/. Maybe this address does not enforce proper email validation.

Thanks,
Brittney

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