"Spell-check" will catch some, but not all, of your mistakes.
Don't jeopardize the good faith of a
customer
with the omission of even one little letter or comma.
The abundance of typographical errors found in media of all types indicates that people and
businesses may not be aware that they need a proofreader.
Every
business wants and needs to put forth its best face. If a document contains
obvious errors in grammar, punctuation, and word usage, the customer will be
negatively impressed, even though that impression may be unconscious.
Even the best intention by a writer can produce errors. Writers
know what they have written, so will see only what they expect to see. Typos
and word usage errors will blend into the page. However, that error could jump
off the page for your reader, your client or employer, or your prospective
customer. Having another set of eyes gives you and your project a more positive and powerful first impression..