Sender email address (e.g., [email protected]). After configuring DMARC, SendCloud uses the current domain as the suffix of "from"

Recipient email addresses (separated by semicolons, e.g., [email protected];[email protected]). Required if not using xsmtpapi or address list

Email subject (cannot be empty)

Email content in text/html format. Required if plain is empty

Content summary. Replaces existing summary if present; added if not. Only valid with html

Sender name (shown as "IFAXIN customer service [email protected]")

CC addresses (separated by semicolons)

BCC addresses (separated by semicolons)

Default reply addresses (separated by semicolons, max 3). Supports plain email or display-name format (e.g., "ASC <[email protected]>"). Defaults to "from" if empty or null

Label for this send. Automatically created if not existing in the account. Max length is 255 characters

Tags for the request (separated by ";", max 5 tags, each up to 50 characters)

Email headers in JSON format (e.g., {"header1": "value1", "header2": "value2"})

SMTP extension. See → X-SMTPAPI for details

Email content in text/plain format. Required if html is empty

Max 128 characters. Duplicate values within 1 hour are only processed once

Whether to return emailId. Returns a list for multiple recipients

Whether to enable notification

Whether to use address list (e.g., to=[email protected];[email protected])