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Custom variables
The email_form module whas build because of the use of dynamic variables inside the template which is declared inside your template file and inside the {exp:reinos_email_form:form}
tag.
Those variables are simply defined by declaring form fields. See the example page for a real use case.
In cases of an array defined like
<input name="test[]" type="checkbox" value="1"/>
<input name="test[]" type="checkbox" value="2"/>
<input name="test[]" type="checkbox" value="3"/>
This data is available inside your template as (notice the _pair
at the end of your variable name)
{test_pair}
{value}
{/test_pair}