combing documents in one email

Hello, @TFletch1427.

First, let's review if the box beside the Email Later feature is checked under the Preferences.

Here's how:

1. From the Edit menu select the Preferences tab.
2. Click on Send Forms at the left pane, then go to the My Preferences under the Auto-check the "Email Later" checkbox if customer's Preferred Delivery Method is e-mail. 
3. Tap on OK to save the changes.

If it was already turned on, I suggest checking your email preferences and ensure that it was set up correctly.

For your guide, read this article: Connect your email to QuickBooks Desktop.

Let me know if there's anything you need assistance with. I'm a few clicks away to help. Have a good day!