Big Business for Windows lets you send PDF attachments with Thunderbird.
This Solution provides setup details. (6723)
To use Thunderbird to send PDFs from Big Business for Windows:
1. Download and install Windows Emailer from our downloads page:
2. Go to the Employee toolbar to My Prefs
3. For Print Options choose Advanced. This adds the Destination column where you can choose Printer, PDF, or Send Email
4. For Email Client choose Windows Mail.
Thunderbird uses the same generic settings and built-in Windows Mail. Thunderbird automatically configures itself as your default mail program when installed.