Last Letter

dashboard trusted contacts
dashboard messages
check-in email for users
fallback logic email based on trusted contacts response
Email sent to a trusted contact when the user becomes unresponsive — they confirm the user’s status before messages are delivered.
Last Letter finally delivered to the recipient with the text message and the video link

Inspiration

We’ve all lost someone — and in the quiet after, we’ve all wished they had left us something: a letter, a voice, a message that says I’m still with you.

As a dad to a 4-year-old daughter, that thought haunted me: What if I didn’t wake up tomorrow? What would she remember? What would be left unsaid?

I built Last Letter so no one I love would ever have to wonder.

What it does

Last Letter lets you write your most important messages — to your kids, your spouse, your closest friends — and have them delivered only if something ever happens to you.

It includes daily check-in emails, trusted contact verification, multi-day safeguards, and full message delivery logic — ensuring that your final words are sent only when truly needed.

How we built it

We started with an 18-page product vision doc and dropped it into a single prompt on Bolt.new.

From that one-shot prompt, Bolt scaffolded our entire foundation — file structure, routes, database logic, and backend functions. That gave us the freedom to focus on the message flow, emotional clarity, and reliability.

The full stack includes:

React + Tailwind (frontend)
Supabase (auth, database, RLS)
Netlify Functions (cron tasks + logic)
Resend (emails)
Buy Me a Coffee API (support tiers)
Judge Mode for 3-minute test cycles

Challenges we ran into

Designing a verification flow that respected false positives, trusted confirmation, and grace periods
Getting the fallback logic airtight — so messages don’t send too early, or too late
Making the experience feel emotionally safe, not morbid
Getting all logic to work in a hackathon-safe demo window — Judge Mode was our fix

Accomplishments that we're proud of

A full working MVP that simulates death-based delivery logic — built with a single Bolt prompt
A smooth and intuitive emotional UI, despite the heavy subject
Verification flow with trusted contact responses, fallback delays, and message delivery safeguards
Multiple support tiers, enforced via live BMAC API logic
A demo video that blends real UI with cinematic storytelling

What we learned

Emotional design matters just as much as technical accuracy
It’s possible to build something deeply human — even when using AI scaffolding and serverless tools
Bolt.new truly accelerated our workflow and let us stay focused on what matters