Hi Mark_R.

I am also trying to find a way to change the body of the email that is sent when emailing invoices in a batch.   I have done all the steps you outlined above, and successfully added a new template email that can be used when emailing invoices.  I have even set this new template as the default so that all the invoices that are emailed are sent with this new template. 

However, we have recently upgraded to QB Enterprise Desktop 2020, which features an option to 'Combine forms to a recipient in one email.'  This is a great feature.  When I have a customer who has 5 invoices, they receive 1 email with all 5 invoices attached, instead of 5 emails. 

If I do NOT check this option, and send my invoices individually (1 invoice = 1 email), there is a drop down box allowing me to choose the email template I want.  But...  when I check the box to turn this 'combine forms' feature on, the body of the email goes back to the standard 'Your invoice is attached.  Please remit payment at your earliest convenience.' email.  There is no longer a drop down box allowing me to choose an email template and I cannot seem to find any way to change the body of the email to my new template.  I would prefer to send invoices with this 'combine forms' option checked to save my customers unnecessary emails.  Do you know of any way to change the default body of the email that is sent when invoices are emailed using this 'combine forms' option?

I already called customer support and the 'support' agent I spoke to had no idea how to, or even if I am able to, fix this problem.  Maybe you have a better option?