“Letter to Your Future Self” was a seasonal QQ Mail campaign that turned email into a personal, emotional experience.

As the product designer, I led the UX and UI, from user flows to polished interface, bringing warmth and elegance to a typically functional tool.

By blending emotion with utility and collaborating closely with PMs and engineers, we launched a feature that resonated with millions, boosting sharing engagement by 6%.

The success of this campaign led to its adoption as an annual feature, now released every December.