I was thinking of using a custom invoice field in my email template. I would fill the information from the invoice editor screen which would then return in the email template. Downside is that I would have to enter a text with every invoice. That is when I thought of 2 solutions: 1) a default value for custom fields or 2) conditional tags inside email templates.
The first solution would mean I wouldn’t have to worry about forgetting the custom invoice field and thus the email template being empty.
The second solution would be like this:
if (custom invoice field not empty)
use text in email template
"use this text"
Is this something that can be considered?
An other solution of course would be to implement default email templates for recurring invoices.