·4 min read
ShieldProduct Design
Junk email anxiety
Why people treat the junk folder as a second inbox, and how that behavior changed the way we designed Shield's Security Briefing.
Ben Hathaway
Chief Technology Officer
$ whoami
the mailprotector engineering blog
HELO, world
Field notes from the people building email security at Mailprotector. How we get the good mail through, stop the bad, and keep a few decades of SMTP running, including the long nights that come with it.
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Latest
All articles →·5 min read
AIShield
AI has to earn its place
Why Shield uses Zero Trust to control inbox access and a language model to summarize mail. The product design choices behind intentional AI.
Ben Hathaway
Chief Technology Officer
·7 min read
Software DevelopmentHiringCodingAI
Great software engineers understand more than code
Coding skills are important, but understanding the business logic and industry behind the software may matter even more as AI coding tools improve.
Andy Barringer
Director of Software Development
·8 min read
PhishingAI
Just-in-time phishing
AI made it cheap to generate a phishing message for one person, use it once, and adapt every follow-up to the target's replies. Here is what that changes for email detection.
Ben Hathaway
Chief Technology Officer
·14 min read
QAShieldBracketSMTP
You can't test email against a spec
Email is a federated protocol with decades of implementations behind it and an adversary working the gaps on purpose, so the set of things your product has to handle is discovered rather than designed. How we run QA at Mailprotector without a QA department.
Ben Hathaway
Chief Technology Officer
·10 min read
ReleasesShieldDeploymentMicrosoft 365
Deployment Control: deploy today, roll out at your pace
The engineering story behind Shield's Deployment Control release: how deployment and rollout became separate steps, how health checks gate enablement, and the routing redesign that removed DNS from the process.
Ben Hathaway
Chief Technology Officer
·11 min read
ShieldExchangeMicrosoft 365SMTP
The evolution of Shield's mail flow architecture
Three versions of Shield's mail flow architecture, from a blunt MX record to a design that hands the last mile back to Microsoft, and what changed each time along the way.
Christian Maddox
Senior Software Engineer