High CTR: Recipients anticipate transactional emails because they help them complete an action. That is why they open them and click on them. Take advantage of this dynamic and include a highly customized call-to-action (maybe even as a P.S.) to leverage the fact that the subscriber is fresh and very actively engaged with your email communication. A 2008 Jupiter research showed that marketing content in transactional messages helped increased revenue and brand recognition.
Email marketing messages can also help you increase traffic to your website. You can link to relevant website content within your email message or craft a compelling CTA that asks readers to head back to your website to take a specific action. If you really want to make your CTA stand out, you may want to use a colorful button, which makes it easy as possible for readers to take notice of your CTA and make their way back to your website.