You can print your invoices in a batch print by going into tools > print:

You can print all of your current invoices from this page. Choose "All with Amounts" to print only invoices with an outstanding balance, or select "All" to print every invoice, including those with a zero balance.


Once you decide what invoices you are printing (you can print all or chose what unit invoices you want), you will hit "generate PDF batch".
You will then find your PDF batch int "print history". If you have a lot of units, you might get mulitple zip folders. You then can save to your device and print your invoices to mail out. The way it prints is for a two window envelope.
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