Startup Sonar
SaaS
⭐ Viability: 7/10
death tech legacy planning emotional messaging

LastSend: posthumous message delivery app for final communications to loved ones

Published Feb 18, 2026

🔴 Problem Identified

People worry about things they never said to family and friends if they die unexpectedly. Unlike wills and legal documents handled by lawyers, there's no reliable system for delivering personal, emotional messages after death. Many important conversations and sentiments remain unexpressed because people assume they'll always have more time.

💡 Proposed Solution

A mobile/web app where users write messages, add photos, videos, and voice recordings for loved ones. Users check in regularly (customizable frequency). If they stop checking in, the system contacts trusted contacts to verify death before automatically delivering the prepared messages to designated recipients.

📊

Market Size

Medium

⚙️

Difficulty

Medium

⏱️

Time to MVP

3-6 months

💰

Investment

Low

🔒

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Quick Overview

Target Audience

Adults aged 30-65 who are concerned about legacy planning, particularly those with families, chronic illnesses, high-risk jobs, or strong family bonds

Revenue Potential

$100K-$500K

Competition

Low

Key Advantage

Simple check-in system with trusted contact verification prevents accidental delivery, plus multimedia support beyond ju...

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