HI HOW DO I SEND A EMAIL TO ALL MY CUSOMERS IN ONE GO , NOT A INVOICE JUST A NEWSLETTER

Hi there, @hayleysoanes.

You can use the recommended email newsletter services by QuickBooks to send out an e-newsletter to your customers for free. These services are MailChimp and Constant Contact. However, you can still look for a third-party application that can send an e-newsletter.

Please check out these articles to learn some email marketing tips in QuickBooks: 

• Email marketing tips: 10 easy to follow rules.
• How to Create an Effective Email Newsletter.

Please touch base with me here for all of your QuickBooks needs, I'm always happy to help. Thanks for dropping by.