Hi, I work in a government office. I put together and send out a daily e-newsletter which goes to a couple thousand people. These people have all subscribed to it and want to read it but most of them get hundreds of emails a day and we and they would like to make it stand out in their inbox so they don't pass it by. I need a simple solution which does not cost any money.

You should have an option to make the email high importance. Look for an icon or something that has an exclamation point. So when they receive the email, it will have an exclamation point next to it saying it is an important message.