Take the email below from Paperless Post, for example. I love the header of this email: It provides a clear CTA that includes a sense of urgency. Then, the subheader asks a question that forces recipients to think to themselves, "Wait, when is Mother's Day again? Did I buy Mom a card?" Below this copy, the simple grid design is both easy to scan and quite visually appealing. Each card picture is a CTA in and of itself -- click on any one of them, and you'll be taken to a purchase page.
Email Octopus’ free plan (‘Shrimp’) allows users to send unlimited emails to up to 2500 subscribers. Users can send emails from multiple email addresses and there are still plenty of templates to experiment with, although it does not include any automation functionality (which is reserved for paying subscribers). If you don’t fancy signing up for an account just yet, 11 completely free templates are available to download directly from their website.
Sample review: “See what happens to your emails after you press send…you’ll know exactly when they opened your email and whether or not they clicked on your link. BananaTag will even tell you whether they’re on their desktop or mobile device. And best of all, your email appears NO different to your contacts. All of the tracking is done seamlessly without any change in the user experience.” — BuzzBlogger