Can I create email with HTML formatting? What about people who can only read plain text email?
Yes, you can create plain-text email and/or HTML email. These dual-format emails are in “multipart/alternative” MIME format, meaning that when someone opens an email, he will only see the part that his email reader can read. The vast majority of readers will see only the HTML part, but the minority of text-only readers will still be able to see the text content you provide.