CRM reports available/campaign integration tool

CRM reports available/campaign integration tool

I am still pondering your CRM service.  I am just getting my database started from zero, and yet want to get an email out as soon as possible, as I enter new contacts.  My goal is to add about 20 at a time, and then send an email blast.  It won't always bee this way, but to get the ball rolling, that makes the most sense for me at the moment.  

My question is this...once I enter my 20, I'd like to send an email blast (likely using the campaign application you have available too).  Then I would add another 20, and yet want to track who has received the email, andn who has not, adding the new names to the same email campaign as they get entered.  Is there a good way to build a report that allows me to track ones who have received the email and the ones who have not?

Since I am such a small business, I think your free forever  campaign tool is likely a good tool for me as well, and I assume they integrate well together?

Thank you