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The Letter Project

The Letter Project

Talk about what matters most at life's end [Tech]

Health·Launched Apr 2015·0 upvotes·med.stanford.edu

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ALIVEverified Jul 11, 2026 · HTTP 200

CohortClass of 2015

What it is

Talk about what matters most at life's end [Tech]

HTTP liveness

9 probes since Jun 16

Jun 16Jul 11

AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub

Jun 16, 2026
First probe — live
Alive · 200 OK

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Press

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Tags

consumers cloud markdown

Pulse Indexobserved activity

9 probes0 pressGitHub –Tranco –

Not enough observed signals for a Pulse Index (needs 2+ signal families).

Cohort survival · Class of 2015weekly

12,940 products launched in 2015 · 100% still active

12,899 active41 sunset

Still active

100%

Median lifespan

4.9y