Forum Discussion
As you have discovered our system allows for you to setup an "Is Invoice Email" This should be used for the accounts email address. When sending invoices, if this email address is setup it is used by default. If this hasn't been setup the primary email address will be used. It is not possible to pick at the time of emailing invoices.
When you email debtor statements, you must select the which email address to use in the "Send Email too" box during the mail merge process if you wish to use this email address first.
It is not possible to email invoices or debtor statements to multiple email addresses for the same client.
For more information about the "Is Invoice Email" please refer to the online help - http://help.myob.com/wiki/display/pmframe/Phone+number+and+email+address