As per TurboTax, I can only file my tax return by mail as I only have foreign earned income and no US income at all. I have submitted my 1040 and 2555 by mail for the past few years. I read a forum of someone asking if they should submit proof of their foreign earned income as there is no W-2. I have never done so and always thought it was not necessary. I was wondering if proof of income need to be enclosed with my 1040 and 2555 when I send them by mail? Thank you in advance.
