as the title say .
THIS CASE IS ONLY FOR MANUAL INVOICE CREATION IN ADMIN SIDE .
when creating invoice manually from admin side , there are option "Invoice Delivery" and a checkbox "email" , when we shoose email , and saving/creating invoice , so the invoice well created , and added to queue mail delivery (it should be delivered after some time (no more than 5 minute) .
so we need the invoice to be emailed after the creation of invoice immediately . (this feature was exist in v 2.5 ) .
our case , we have some potential users that call our staff by phone to create a proforma invoice for them , after the creation of invoice they consult the email to check the proforma, and then confirm it by phone to be executed - that was in v2.5 ) , in v3 , and from the test period , my staff toll to our clients please wait some time to recieve the email , then call us again to confirm , that was a something borred to our clients , because they always when they end call , theyfinish the order and confirmation , now they ned to call 2 times , and is a task plus for our staff (the time matter in our work ) .
NOTE : in the test persiod i have not make any attention to the send invoice from the client profile page , but any way i preffer to be snt immediatly rather than exit and select to send it .