Below is only tested with Sales Invoices!
In contrast with what is mentioned in the guide https://www.manager.io/guides/10643:
it appears that at least 2 e-mailaddresses will be accepted.
When this button is used with 2 e-mailaddresses the receivers of these e-mails will see both the e-mailaddresses used.
One of my clients wants to send the invoices to his client (of course) and also to his accountant.
It would be nice if the client would only see his own e-mailaddress when receiving the e-mail, and the accountant would only see his own e-mailaddress.
Another approach would be using the field [Email address] in [Settings]-[Email Settings]. When two e-mailaddresses are entered, separated by a comma, only the last e-mailaddress will be used.
It would be nice if this feature could be extended to using 2 (or even more) e-mailaddresses, and each receiver would only see his own e-mailaddress.