Understand each status
Sent does not mean every message was delivered, and Failed does not necessarily mean every message failed.
Check why messages failed
Open the campaign’s analytics and select See details under Failed. The failed-message list shows Error source and Reason for each message, so you can check the cause for both Failed and Partially sent campaigns.Understand why sending is paused
For manually paused campaigns, use Resume in the campaign list when you’re ready. See Set a campaign spend limit for details about automatic pauses.

