Take action and stay up-to-date with dynamic email in Gmail
Over the past decade, our web experiences have changed enormously-evolving from static flat content to interactive apps. Yet email has largely stayed the same with static messages that eventually go out of date, or are merely a springboard to accomplish a more complex task.
https://www.blog.google/products/gmail/take-action-and-stay-up-to-date-with-dynamic-email-in-gmail/