Specifies the API key used to authenticate with the Mailchimp Transactional API.

Data Type

string

Default Value

""

Remarks

To connect to the Mailchimp Transactional API, you must authenticate using a Transactional API key. To obtain the Transactional API key, you must have the Transactional Email Plan enabled in your account.

See "Connecting to Mailchimp Transactional API" in Establishing a Connection for step-by-step instructions on generating the Transactional API key.