Coding HTML emails is a beast of its own, often perceived as relying solely on outdated practices. And for a good reason, email client quirks can make even the most clever front-end developer crazy. Emails are still part of your user's journey, from commercial newsletters to transactional emails.
The first step to thinking like an email geek is to understand how email clients change our code and why this happens. From technical and security constraints to user experience enhancements, every quirk is there for a reason.