When you click the Start Campaign button to begin a messaging campaign, your first messages will be sent out after 20 minutes. This allows you to pause the campaign and make last-minute adjustments before any mail is sent to candidates.
During this 20 minute period, the Candidate page will list each candidate status as Not Started and the first step as Pending.
After the 20 minute period, SeekOut will start to send your messages. You can confirm that your messages are being sent out by checking the Sent folder of the email address you have linked to SeekOut.
To change your when messages are sent out for an individual campaign, see the article Messaging Settings: When To Send Preference.