Opening a Scheduled/Outbox campaign shows the Campaign Details panel:

• Scheduled for – the send date and time.
• Recipients – the total and a tag per selected group with its count (e.g. All Users 512, Email Newsletter 40).
• Subject line, Sender email.
• Content – the plain text, or a Template #ID link that opens a preview (or Email not set if no design was attached).
• UTM tracking – Enabled — click source tracking available in Google Analytics or Disabled for this campaign.

Above the panel you may see a red box This campaign could not be sent due to the following error(s): listing provider errors when sending failed. Once at least one email has been sent, opening the campaign goes to the statistics view instead.