Use this method to unschedule an email campaign activity by deleting the schedule. You can only unschedule email campaign activities that are in SCHEDULED status. Unscheduling reverts the email campaign activity to the status prior to SCHEDULED.

Use this method to return the current schedule for an email campaign activity. This schedule contains the date that Constant Contact will send the email campaign activity to contacts. If the email campaign activity is not in SCHEDULED status, this method returns an empty array and a 200 response code.

Use this method to schedule when Constant Contact will send an email campaign activity to contacts. Use the scheduled_date request body property to enter the ISO-8601 format date that you want Constant Contact to send the email campaign activity on.

Before you schedule an email campaign activity, you must update the email campaign activity and specify which contacts you want Constant Contact to send the email to. When you make a PUT call to update an email campaign activity, use the contact_list_ids or segment_ids array to add contacts.

You can only schedule email campaign activities that have the primary_email role and are in DRAFT, DONE, or ERROR status. When you schedule an email campaign activity in DONE status, Constant Contact does not send the email campaign activity to contacts that already received it. Constant Contact only sends the email campaign activity to any new contacts in the contact lists or segment you use.