when email an invoice, I don't see the "Include Transaction" checkbox, how can I turn on this feature?

AI generated answer (using internal Slack threads):

To enable the "Include Transaction" checkbox when emailing an invoice, you need to follow these steps: 1. Navigate to the customer record associated with the invoice. 2. Go to the "Preferences" subtab. 3. In the "Send Transactions Via" section, ensure that the "Email" option is checked. 4. Add a valid email address to the customer record. Once these steps are completed, the "Include Transaction" checkbox should be visible when you attempt to email an invoice. This checkbox allows you to include the transaction as an attachment in the email. Please note that this setting will apply to all sales documents for that customer, including estimates, orders, etc. If you only want this feature for invoices, you might need to create a workflow that checks the "To Be Emailed" box on new invoices if they're generated from a memorized transaction. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******