post
https://api.apollo.io/api/v1/emailer_campaigns//approve
Use the Activate a Sequence endpoint to start an inactive sequence. Once activated, the sequence begins sending emails to its contacts on the configured schedule. The sequence must have at least 1 step configured before it can be activated.
This endpoint requires a master API key. If you attempt to call the endpoint without a master key, you will receive a 403 response. Refer to Create API Keys to learn how to create a master API key.