You have slaved over picking out just the right words. But how do you say them in print?
Studies show that Ariel or Times Roman works best online. Courier typeface works best in sales letters offline. Split tests have shown that Courier outdraws any other font. One gets a more personal and urgent feel when reading that typewriter personal “from my home to yours” style.
In the headline, use both upper and lower case letters. It is easier to read.
Serif typefaces in body copy are also much easier to read. Sans-serif typeface is much harder to read.
It would be a shame to have carefully picked out your words only to lose your reader because they couldn’t actually read the words.