Email QR codes can increase your outreach capabilities in a number of ways, especially as they can be embedded on a number of physical items. For instance, they can be embedded on business cards, providing recipients with a convenient connection to your email with just a simple scan from their smartphone.
QR codes for email can even be used to connect users to customer service representatives via email, too. They can be embedded in product packaging, or even placed on signage and posters around physical storefronts, making connecting with customers and solving their queries much more efficient.