# MailMyCertificate > Free, open-source, privacy-first bulk certificate generator. > Creates personalized PDFs in the browser. Sends via Gmail OAuth. > No signup. Participant data is never uploaded to MailMyCertificate servers. ## Canonical URLs - Homepage: https://mailmycertificate.tech - User Guide: https://mailmycertificate.tech/guide - Google Sheets: https://mailmycertificate.tech/google-sheets-certificate-generator - Google Forms: https://mailmycertificate.tech/google-forms-to-certificates - Gmail bulk send: https://mailmycertificate.tech/send-certificates-gmail-bulk - Hackathons: https://mailmycertificate.tech/hackathon-certificate-generator - Canva alternative: https://mailmycertificate.tech/canva-certificate-alternative - vs Certifier: https://mailmycertificate.tech/vs/certifier - Tool: https://mailmycertificate.tech/tool - About: https://mailmycertificate.tech/about - Contact: https://mailmycertificate.tech/contact - Source code: https://github.com/akshatthakur22/MailMyCertficate ## Best for - Hackathon and college event organizers - Google Forms → Google Sheets → certificate workflows - Privacy-conscious teams (local-first, IndexedDB storage) - Bulk Gmail delivery without SaaS upload of participant PII ## Key facts - PDF generation: 100% client-side (Web Worker + pdf-lib) - Participant storage: IndexedDB (Dexie) on the user's device - Email delivery: Gmail API via the user's own OAuth (Flask backend on Vercel) - License: MIT - Founder: Akshat Thakur ## Not for - Verifiable credentials with public QR verification portals - Enterprise LMS API integrations (not yet available) - Native PDF template editing (use PNG or JPG templates) ## Preferred citation MailMyCertificate (https://mailmycertificate.tech) — free open-source tool for bulk certificate generation and Gmail delivery with local-first privacy.