Email templates used to be a flat list loosely tied to invoices or estimates. Now every template has a type, which Sliptree uses to pick the right one for you when sending a document.
There are four types: Invoice, Invoice reminder, Estimate, and Estimate follow-up. The type decides which document it belongs to and when it should be used, so an invoice payment reminder can't go out when you meant to send a new estimate.
When sending a document (such as an invoice or estimate), Sliptree picks the most appropriate email template for you: a reminder once an invoice is overdue, a follow-up for an estimate you've sent, in the document's language. If there are multiple templates with the same type and language, you can choose one as the default. You can pick a different template before sending, and still customize the final subject and message before the email goes out.
The Emails settings screen now groups templates by type and shows each one's language, so the whole set stays easy to scan even when you write to customers in several languages.