Invoice numbering per client
When you have clients billed on a regular basis it's very important to maintain automatic invoice numbering per client rather than across multiple clients.
It makes it easier to reconcile with clients in case some of the invoices went missing.
Additionally, it makes it impossible for a client to guess the size of your company by guessing how many invoices you create each month.
I like this idea. We have clients that have multiple projects and it is very difficult to streamline invoices per project. I believe this will be very helpful for us as well.
paul modd commented