Bug: site allows me to add a 'Who paid you?' before any invoices are created. Then when I create an invoice, it loses the 'Who paid you' info I entered.

What I'd really like is to have all my expense invoices set up to be sent to myaccount123@bullethq.com, and have your software parse out the details (VAT etc.) and arrange it nicely by date and company. It's currently easier for me to log into, e.g. my web hosting provider, pull up a list of invoices for the last year and copy/paste them into a spreadsheet. Your approach would have me manually enter info from dozens upon dozens of invoices one at a time into your webapp (using the 'Incoming Bill' form).

https://getitkeepit.com/ are an Irish company that parse incoming bills from an (admittedly small) number of utility companies, maybe you could look at something similar?