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Reusable Jinja macros for payment email templates.
Two patterns to know:
- ``summary_table()`` is a **call-block** macro — invoke it with
``{% call summary_table() %}...{% endcall %}`` and the rows go
inside the call block, between the
tags it renders.
Reads like HTML; one place to change the table styling.
- ``row(label, value, emphasis=False)`` is a plain macro for a
single label/value
. ``emphasis=True`` bolds the value and
bumps the contrast — use it on the "Total today" / "Refund
amount" final row of each summary.
All styling is inline (email clients don't reliably honour