curl --location --request PUT '/smartflows//actions/send/email/' \
--header 'Authorization: Bearer JWT' \
--header 'Content-Type: application/json' \
--data-raw '{
"subject": "Welcome!",
"preheader": "Here’s a special message for you.",
"from": "Marketing",
"fromEmail": "marketing@company.com",
"replyTo": "support@company.com",
"cc": "backup@incomaker.com",
"language": "cs",
"assetId": "123456"
}'{
"error": "Reason of failure"
}