Added Bugster document about sending invoices to multiple emails

Author: ThomasArdal

docs/how-to-send-invoices-to-more-than-one-email-address.md

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+---
+title: How to send invoices to more than one email address
+description: Learn about the possibilities of sending elmah.io invoices to more than one email address on charges.
+---
+
+# How to send invoices to more than one email address
+
+elmah.io currently only supports sending invoices to a single email address. You can have it delivered to multiple email addresses in one of the following ways (and probably more):
+
+- Set up an email group covering multiple email addresses and use the group's email as the *Accountant Email* in elmah.io.
+- Set up an automated forward rule on the email address registered as *Accountant Email* in elmah.io.