How I built a 🛠️ SaaS in my spare time
March 6, 2026
Sometimes, you see something and think “I can do that better.” And sometimes, you actually act on it.
That’s how MailShield started.
The itch
E-mail security is a mess of protocols bolted onto technology from 1971. DMARC was supposed to help. It lets domain owners define policies for unauthenticated e-mail and sends aggregate reports back so you can see what’s happening. Great in theory. In practice, those reports are XML files that look like this: