What is the REST API route for sending transactional messages?

What is the REST API route for sending transactional messages?

• A. /messageDefinitionSends
• B. /TriggeredEmails
• C. /transactionalSends
• D. /send/transactional

Answer: (A)

Transactional messages in Marketing Cloud are sent via a dedicated REST route that triggers a pre-defined message definition. You POST to the endpoint handling messageDefinitionSends (typically /messaging/v1/messageDefinitionSends). The request uses a message definition key and recipient details, and the system routes the message through the transactional channel. This route is the standard, documented way to trigger transactional sends via REST. The other options correspond to older or non‑REST paths and aren’t the official endpoint for initiating transactional sends.

Transactional messages in Marketing Cloud are sent via a dedicated REST route that triggers a pre-defined message definition. You POST to the endpoint handling messageDefinitionSends (typically /messaging/v1/messageDefinitionSends). The request uses a message definition key and recipient details, and the system routes the message through the transactional channel.

This route is the standard, documented way to trigger transactional sends via REST. The other options correspond to older or non‑REST paths and aren’t the official endpoint for initiating transactional sends.