Read this article to better understand what are the reasons end users did not receive the Totango Campaign.
Within a specific campaign, a global admin can click on the value to view the user details and more information.
You can find the stats here:
Messages are dropped mainly to protect the sender reputation.
We use an emailing service which maintains several blacklists (like spam lists). Dropped emails are email addresses which appeared in those blacklists. For example, once an email address goes on the blacklist, the message will be dropped the next time this email address is targeted.
When an email cannot immediately be delivered, but it hasn’t been completely rejected the deferred event fires. Sometimes called a soft bounce, Totango will continue to try for 72 hours to deliver a deferred message.
If a server cannot or will not deliver a message, Totango marks it as a bounce event. Bounces often are caused by outdated or incorrectly entered email addresses. Many times you won’t know a bounced email address until it bounces. This event can help you ensure it doesn’t bounce again by removing it from your lists.
Most internet service providers provide a feedback loop, sending specific spam complaints to the email service providers. When Totango receives a notice, we mark it as spam and expose its details so that you can react appropriately–or at the very least, never send another email to that address.
Campaigns will not be sent to users which asked to unsubscribe or was marked as unsubscribe.
The value represents the amount of unsubscribed users in the campaign.