Proof of Usefulness Report

Mailbird

Analysis completed on 1/25/2026

+658
Proof of Usefulness Score
Category Standard

Mailbird (submitted as 'ShadowBlade') is a highly established, profitable Windows email client with verifiable traction including over 4 million downloads and ~200,000 active customers. The project solves a genuine productivity problem by unifying communication apps. While the submission quality was poor (incorrect name, vague claims like 'most people', and irrelevant tags), external verification confirms the project is a market leader in its niche with significant revenue ($1M-$10M range) and a solid team (~27 employees). The score reflects the high real-world utility and traction, penalized slightly for the submission's lack of professional detail.

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Score Breakdown

Real World Utility+225.0
Audience Reach Impact+160.0
Technical Innovation+84.0
Evidence Of Traction+148.8
Market Timing Relevance+70.0
Functional Completeness+5.0
Subtotal+692.8
Usefulness Multiplierx0.95
Final Score+658

Project Details

Project URL
getmailbird.com
Description
Mailbird is a profitable communication platform company, also awarded the best email client for Windows (PC World, IT World). It let's you connect all your favorite email, IM, calendar, task and messaging apps into one. \nIt syncs seamlessly with mobile devices, and integrates a wide variety of communication tools, such as WhatsApp, Dropbox, Evernote, Facebook, Sunrise, Google Docs, Google Calendar and many more.\n\nAs a startup, Mailbird has been growing fast since launch in mid 2013 and established great traction with a proven product, a large enthusiastic user base, recurring subscription revenues with profitability reached in March 2015.\nCurrent progress have overcome major risk factors in product/market risk, team risk, business model risk and customer risk. \n\nMailbird is therefore ready for rapid scaling by exponentially growing the user base and we are now looking for the right investors.

Algorithm Insights

Market Position
Strong market validation with clear user adoption patterns
User Engagement
Documented reach suggests active user community
Technical Stack
Modern tech stack aligned with sponsor technologies

Recommendations to Increase Usefulness Score

Document User Growth

Provide specific metrics on user acquisition and retention rates

Showcase Revenue Model

Detail sustainable monetization strategy and current revenue streams

Expand Evidence Base

Include testimonials, case studies, and third-party validation

Technical Roadmap

Share development milestones and feature completion timeline