How can businesses improve their email marketing effectiveness?

Businesses can improve email marketing by being personal and showing genuine care for recipients. Jason Calacanis demonstrates this by critiquing a generic Snapcycle email that failed to explain what the product actually does. Effective emails should remind recipients about the product's purpose and make content interesting rather than using impersonal templates like 'do not reply' and 'dear customer.' When sending account invites, it's crucial to personalize communication, clearly explain your product's functionality, and craft compelling content that resonates with the audience. This approach helps build authentic connections with potential customers rather than sending generic messages that recipients might ignore or delete without understanding the offering.