I need to send an email to all my customers please tell me how

Hello there, @davidbaines.

You'll want to go to the Sales menu and send an email to all your customers from there. Let me show how.

In your QuickBooks Online (QBO) account:

1. Go to the Sales menu.
2. Select Customers at the top.
3. Place a check-mark next to the customers that you need to email.
4. Click the Batch actions drop-down and select Email.

Here's an article you can read for more details: Email or print multiple invoices and sales forms.

I'm also adding this article that you can read in case you want to customise your sales form: Add, customise, or remove logos on sales forms.

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