Ever tried to use GMail in a different way? I tried it today to make it a very powerfull invoicing reporting tool to check if your clients payed your invoice or not. Some will think that this is a very uncommon way to track invoices - well it's ok for me and perhaps for some of you as well.

Simply create the labels "> INVOICED" and "> PAYED" or name it like you want and create a label for every company you send invoices. Every time you create a new invoice - send an email to your gmail account with the amount in the subject or even mor details about the invoice and label it as "> INVOICED" - and later when the client send you the money - label it as "> PAYED".
Now create bookmarks for invoiced and payed labels to direct access all invoiced or payed invoices from your browser with a single click.
Bookmark for all open invoices : Label "> INVOICED"
http://mail.google.com/mail/?search=query&view=tl&start=0&init=1&fs=1&q=label:>-invoiced
Bookmark for all payed invoices: Label "> PAYED"
http://mail.google.com/mail/?search=query&view=tl&start=0&init=1&fs=1&q=label:>-payed
Please notice the "q" parameter in the url at the end for the label name to search for and how the space in the label is replaced by a "-".
With this two Bookmarks you have direct access from your browser to all invoiced and payed invoices with a single click. If you don't like to see these mails in your normal inbox - simple send them to the archive.
If someone has some ideas to improve - just let me know.
gmail invoices reporting google+mail google