My customer has not received my invoice sent vis quickbooks, and I don't know how to prove I sent it!
Invoices are received to an automated email inbox their end, and they have a 90 day payment term, so when the payment date came & went, and I chased it, they claim not have to have received it. If I cannot prove I sent it on the original date, I will have to re-submit, and wait another 90 days for payment!
How can I prove I emailed the invoice on a particular date? (other than the date of the invoice?)
Thanks!
