FrontToken: ********************{
"toAddress": "string",
"subject": "string",
"htmlBody": "string"
}curl --location --request POST '/front/cloud/send/text/mail' \
--header 'FrontToken: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
"toAddress": "string",
"subject": "string",
"htmlBody": "string"
}'{
"code": 0,
"msg": "string",
"data": {},
"error": true,
"success": true
}