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POST
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Authorizations

Authorization
string
header
required

An API key from the dashboard. sk_live_… sends; sk_test_… validates and returns ids without sending.

Path Parameters

id
string
required
Example:

"tpl_01j9x7k2r4m8q3v5n6b7c8d9e0"

Body

application/json
variables
object

String, number or boolean values keyed by placeholder name.

Response

The render

version
integer
required
subject
string
required
html
string | null
required
text
string | null
required
missing
string[]
required

Placeholders the variables did not cover; left as {{name}} in the output.