a10d.info - Calendar Attendee Info

If you've ever wished you could easily reconnect with everyone you've met through your calendar—a10d.info is a tool I built to make this dead simple.

This lightweight tool gives you the ability to upload your .ics calendar file and quickly extract a filtered list of meeting attendees—complete with their email addresses.

Why I Built This

There were so many times I wanted to:

• Follow up with people I’d met in recent months.
• Create a small email update list without exporting my entire address book.
• Audit how I was spending my time and with whom.

Google Calendar doesn’t make this easy out of the box. So I built something that does.

What You Can Do with a10d.info

Once you upload your .ics file, you can:

• Filter your results
  Choose your desired date range, cap the maximum number of attendees per meeting (to avoid pulling emails from giant webinars), and optionally limit to meetings you actually accepted.

• Export attendees
  The tool compiles the filtered list of attendee emails across all matching meetings. You can export this to a CSV and use it for:

  • A lightweight mailing list
  • Re-engagement campaigns
  • Rebuilding your network from past activity

• See your stats
  You'll get an analytics dashboard with insights like:

  • Total meetings during your selected time period
  • Unique attendees
  • Average attendees per meeting
  • Events you organized vs. attended
  • Your longest meeting
  • Most common meeting day
  • Meeting frequency over time

Here’s a sample stats dashboard from my own data:

Built With

This project is powered by:

• TypeScript + Vite for the frontend
• ical.js for parsing calendar data
• Vercel for fast, free hosting
• A simple, clean interface that stays out of your way

Try It Out

The site is free to use and doesn’t store your calendar data—everything runs client-side during the file upload and processing phase.

👉 Visit a10d.info

---

Whether you're job hunting, consulting, doing outreach, or just curious about your own meeting patterns—this little tool can help you turn passive calendar data into something useful.

Let me know what you think—or shoot me feature ideas if there's something you'd love to see added.