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Love was in the UX

4-day design sprint leading to Valentine’s day campaign boosted CTR by 98%

Love was in the UX

4-day design sprint leading to Valentine’s day campaign boosted CTR by 98%

🧠 Monday: A Crazy 8 Sparks a Real-World Idea

It began with a Crazy 8s sketching session—our go-to method for rapid ideation. Improving extension visibility on the logged-in homepage was the straightforward brief. One particular sketch caught our attention: Our mascot Quilly is kneeling and requesting...

| “Will you install me?”

Yes, it was playful, but it was also timely. Given that Valentine's Day is just a few days away, our users found the idea immediately relatable: professionals writing emails, students finishing assignments, and everyone immersed in the emotional frenzy of February 14th.

We saw an opportunity to participate in a global event and do a promotion in a friendly, approachable, and humane manner.

✍️ Tuesday: From Concept to UI

From concept to high-fidelity mockups, we made rapid progress. Among the important design choices were:

  • Prominent placement of the extension CTA above the fold

  • Emotionally resonant copy that felt tied to the season, not gimmicky

  • A warm, illustrated pose of Quilly, conveying a gentle, respectful ask—not a hard sell

    To make sure this felt like a moment of connection rather than a diversion, we worked together across design, marketing, and product.

To make sure this felt like a moment of connection rather than a diversion, we worked together across design, marketing, and product.

We inferenced Jakob's Law and Aesthetic-Usability.

Friction was decreased by the emotionally charged illustration, sparse copy, and amiable tone. People stayed because it was helpful and clicked because it appeared warm.

🔍 Wednesday: Usability Testing & Copy Refinement

We conducted guerrilla tests with folks from other teams to test the copy and design in the middle of the week. Key observations:

  • A feature that is placed during a happy cultural event is more memorable than one that is added at random.

  • Both professional and student users responded favorably to the emotional tone.

  • While many users stayed for the feature, some clicked purely out of curiosity.

  • Emotionally significant events are remembered by people.


    Quilly's pose was adjusted for balance and clarity, the copy was tightened, and the variant was locked for development.

⚙️ Thursday: Build Fast, Launch Right on Time

Just in time for the Valentine's weekend traffic spike, the final implementation went live on Thursday.

💥 The Outcome: Engagement Shot Through the Roof

Throughout February, we conducted the campaign and observed:

  • Extension clicked link increased by 200% in month of Feb 2025

  • Extension installed; CTR increased by 158%

  • People who bought premium via this journey also increased by 69.5%

  • Increased re-engagement from users who were previously inactive


Positive word-of-mouth was also generated by the campaign among our devoted user base. It felt more like a considerate, seasonal prod to improve their writing than a gimmick.

💡 Takeaway: Don’t Be Afraid to Ride the Moment

No amount of UX polish alone can produce the emotional relevance that comes from designing for real-world occasions, such as Valentine's Day, back-to-school, or exam season.

Thus, when an opportunity comes around again, consider this: What is going on in the lives of our users at the moment, and how can we make a significant impact?

That’s not just growth design. That’s human-centered design.

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