Settings are CORRECT yet "Email Later" is not checked on customer invoices created using QB "batch enter transactions." 

>>> Company > Batch Enter Transactions > Invoices & Credit Memos {data copied/pasted from Excel}

All customers have E-mail selected for preferred delivery method & send form preferences are properly set:

>>> Edit > Preferences > Send Forms > Auto-check the "Email Later" checkbox if customers Preferred Delivery Method is e-mail. {BOX IS CHECKED}

I am an authorized contact in QB, so I thought QB "help" could help. I was wrong. The answer provided was “You will have to manually toggle the email later option”. 

If manually toggling invoices to email later is the only solution that QB can come up with then I'd say this is a defect that should be brought to the attention of product development so they can FIX it.

Looking for a true solution, ideally not one that involves buying an external product - or "toggling".

Using QB Enterprise Solutions 24.0. I ran "rebuild data" 2x, errors cleared on 2nd run. No need to recommend that again!