The Snopes explanation restates most of the statements to emphasize that there are certain conditions or times where they are not true. The exceptions on qualified dividends, taxable income, and estate values are worth understanding but they don't make the statements in your email false.

Eight years of progressive tax law changes were necessary to get added income from the haves in this country so that it could be given to the have-nots. It's sad that some of the progressive legislation was signed by Republicans as well as Democrats since the differences in philosophy in the two Parties has gradually changed so that the Parties are no longer Progressives vs. Conservatives. Even the definition of Liberal has changed so that Classical Liberals (who were quite conservative in political philosophy) are now often confused with modern Liberals who are about as Progressive as it's possible to be.

The "Great Experiment" in the USA is rapidly drawing to an end.