There is a known issue with attempting to email directly from AccountEdge to Mac Mail on Mac OS X 10.11 El Capitan. The PDF of the invoice or purchase, etc. will not be attached to the email when sending directly from AccountEdge. We’ve reported this as a bug to Apple and are awaiting a fix to address this issue. This only occurs in Mail and does not occur when sending emails through Outlook.
Workaround
You can choose to save the invoice to disk and then manually email the invoice.
There is another workaround that may be a good solution for people who need to send out large batches of invoices.
This is a temporary workaround
The steps below will need to be repeated each time you want to send emails from AccountEdge.
Open Mail.
Choose Mail > Preferences from the menu bar at the top of the screen.
Click Accounts.
Change your Outgoing Mail Server (for your default Mail account) to None.
Close the Preferences window and, when prompted, save your settings.
Open AccountEdge and email as you normally would. Since there's no default outgoing mail server, the emails will be created with the attachments and will be open on your screen with a warning about need to select an outgoing mail server.
At the warning, choose your Default Outgoing Mail Server from the list and select Always Use This Server.
