You can see the number of queued emails that are due to be sent when you first access the e-Marketing section - please see below:

1. Click on the e-Marketing icon along the menu bar as shown below; 

2. Inside the e-Marketing screen you will see a Campaigns Overview box on the right hand side as shown below:

Check what email campaigns you have scheduled via a pop up list:

You can  click on ‘Queued number’ (you need to click on the number and not the word Queued and it will popup a list of queue messages - see below}