Identity Attestation via Hiring Emails.

DEV.to Submission - Postmark Challenge: Inbox Innovators

What I Built

We created an application called Identizy.

The goal is to leverage Postmark's inbound email parsing to automatically process hiring communications, extract structured KYC-like information from candidates and companies, and create identity attestations. This can help prevent hiring scams and establish trust between job seekers and recruiters.

Key features:

• ✅ Postmark inbound email parsing webhook
• ✅ Automatic data extraction into Supabase DB
• ✅ Public Attestation View for jurors
• ✅ Smart contracts deployed (ERC721 mint open)
• ✅ Next.js frontend for browsing attestations

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Demo

Deployment Instructions (Juror Mode)

Requirements:

• Node.js (>=18)
• pnpm installed
• Supabase account (or use provided demo credentials)

Steps:

# 1️⃣ Clone the repo
 git clone https://github.com/YOUR-ORG/identity-attestation-hiring-email.git
 cd identity-attestation-hiring-email

# 2️⃣ Install frontend dependencies
 cd frontend && pnpm install

# 3️⃣ Setup .env
 cp .env.example .env
# Fill: NEXT_PUBLIC_SUPABASE_URL, NEXT_PUBLIC_SUPABASE_ANON_KEY, POSTMARK_API_KEY, etc

# 4️⃣ Run frontend
 pnpm dev

Once running locally, you can simulate inbound emails via Postmark API or inspect current records via Supabase DB directly.

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Code Repository

Full repo: GitHub - identity-attestation-hiring-email

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How I Built It

Tech Stack:

• Next.js 14 (React server components)
• Supabase (Database + RLS + Storage)
• Postmark (Inbound Email Parsing)
• Wagmi & Viem (Smart contract interaction)
• Foundry (Solidity contracts and deployment)
• TypeScript, Tailwind CSS, ShadCN UI

Architecture:

• Postmark sends parsed inbound emails to Next.js API route.
• Next.js API inserts email data into Supabase table email_attestations.
• Smart contract deployed (ERC721 mint open for future extensions).
• Frontend UI lists attestations and shows candidate/company verification states.

Why this use case?

• Many hiring scams today happen via email.
• Bringing identity attestations to hiring conversations adds trust & verification layers.
• Email-based onboarding allows gradual KYC-like attestations without centralized gatekeepers.

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Team Members

Solo submission by @fsegall.

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Thank you Postmark + DEV.to for this excellent challenge!

Comments

[Dotallio]

Super creative use of Postmark for hiring trust - actually solving a real scam problem. How tricky was it to reliably extract the right info from such a variety of email formats?

[Felipe Segall Corrêa]

Thanks! 🙏 That was exactly my goal — to address a real pain point with hiring scams and identity fraud.

In the current prototype, we used a hard-coded parser tailored to a sample format just to validate the end-to-end flow: parsing → Supabase DB → attestation → public juror view → NFT minting. It wasn’t robust yet.

That said, we are aware that reliable extraction from diverse email formats is a hard problem. If we move forward, we plan to:

Use few-shot prompting (e.g., OpenAI functions or Claude structured outputs) to handle variation

Maintain a feedback loop where jurors can correct the parsed info

Eventually build a training set for fine-tuned extraction models

Thanks again for engaging with the project — let’s stay in touch! linkedin.com/in/fsegall/