I need to be able to send 2 different types of invoices to different customers. I've worked out how to design & save them but I need them to have different email & phone

Hello Quotation, If you would like different contact information for the business on them, as the contact information comes from the account and settings page it will go on all templates. However, you do have the option of creating in word a custom form for one of the invoice templates and then importing it into QuickBooks and in that form, you can type in the different email and phone number, more information on how to do that can be found here