Transactional API
Send Transactional Email
Trigger a personalized email to a specific recipient. If the recipient does not exist in your CRM, they will be automatically created using the provided email and name.
POST
Request Body
Target email address. Mandatory if recipient_id is not provided.
Target existing CRM contact ID. If provided, ‘to’ can be omitted.
Design asset ID. Required unless raw HTML/Subject are provided.
Override or provide custom subject line.
Direct HTML injection (bypasses template).
Recipient display name for CRM sync.
Specific verified sender ID. If omitted, organization default is used.
Merge tag values for dynamic personalization.

