Check your ‘Form Type’ settings to alter the width of your signup box.  This is important as you need to make sure that it is the right size for your site.  Think about where you want the box to appear on your site – for the sidebar, you will want it reasonable small (perhaps 250-300px wide) whereas if it’s for after your post, maybe something much wider (e.g. 600px).
Here at ShoutMeLoud, I use a combination of Aweber + Feedburner to maintain my Emailing list. Aweber is paid, and Feedburner one the other hand is free. Though, I prefer a paid auto-responder service, as it gives me more control and more features. There are many other popular Email autoresponder services for bloggers out there, for example, GetResponse, MailChimp. I landed with Aweber because it’s one of the highly recommended services, and after using it for almost a year, I still in love with it.
A lead magnet (a.k.a. an optin bribe) is something amazing that you give away for free in exchange for an email address. This doesn’t have to cost you anything to create; most lead magnets are digital materials like PDFs, MP3 audio files, or videos that you can create yourself at minimal or no cost. It can be absolutely anything you want, so long as it provides value to your visitors for free.
Follow-Up Series (Autoresponders): In addition to one-time email blasts (called Broadcasts), AWeber allows you to create chains of autoresponders (campaigns). An example would be a welcome email which is sent to each new subscriber who signs up, then a series of weekly “How To” emails explaining the various applications of your product. You can set the interval between these messages to anywhere between 0 and 999 days. You can also start subscribers at different points in the cycle if you wish (so for instance, if you had a separate signup form for advanced flying widget users, you could start them on #5 of your series (“New Applications of Flying Widgets”) instead of #1 (“What is a Flying Widget?”). You can set up separate follow-up series for each list, and you can copy them between lists. You can even set it to stop sending messages once the email has been opened.
The problem is that your list is so big (both long and we were working with a lot of columns and a few equations) that Excel on my computer couldn’t handle it. I have a ton of memory on my computer, but it wasn’t sufficient. For example, when I tried a simple task like sorting the list, it would take several minutes to process the operation. I would literally click ‘Sort’ and then go and work on another task for a while.

Now, you can automatically send highly relevant emails encouraging them to buy the product or service they were considering. Customers who received multiple abandoned shopping cart emails are 2.4 times more likely to complete the purchase than those who receive only one followup email, according to Experian. Try sending the first message one day after, a second message 48 hours after, and possibly a third message within three or four days of abandonment.