BoltMail
The application tells me that my send is complete but says that it has sent to less then the total list. Why is this and what can I do?
If the application says that it has sent to less then the amount that it should have but also states that it has completed sending then some emails have been rejected for some reason. The application will allow you to send to any email addresses that were skipped in the initial send.

Usually this happens when contacts unsubscribed while the email campaign was being sent or sometimes this happens if our mail server was down for any time whilst your send was in place or if the server became overloaded.