Protecting Email Reputation Since 2015
We started List Armor because we saw too many legitimate senders getting blacklisted due to poor list hygiene. Our mission is to make email compliance simple and accessible.
500M+
Emails protected monthly
1,000+
Active customers
99.9%
Uptime SLA
<50ms
Average API response
Our Story
List Armor was founded by email deliverability experts who spent years helping companies dig out of spam folder purgatory. We saw the same problems over and over: outdated suppression lists, no centralized management, and affiliates sending to addresses they shouldn't.
We built the tool we wished existed. A single source of truth for suppression data, with an API fast enough to check every email in real-time and a portal that makes affiliate management painless.
Today, we protect over 500 million emails per month for companies ranging from startups to Fortune 500 enterprises. Our team is distributed across the globe, united by a passion for email deliverability and a commitment to helping our customers succeed.
Our Values
Security First
Your suppression lists contain sensitive data. We treat it that way. SOC 2 Type II certified, encrypted everywhere, never shared.
Developer Friendly
Clean APIs, comprehensive docs, SDKs in every major language. Integration should take hours, not weeks.
Compliance Focused
We help you stay compliant with CAN-SPAM, GDPR, CASL, and other regulations. Audit logs for everything.
Always Available
99.9% uptime SLA backed by multi-region infrastructure. Your compliance checks can't wait.
Our Team
Email deliverability experts building the tools we wished existed.
CEO & Founder
15+ years in email deliverability
CTO
Former engineering lead at ESP
Head of Customer Success
Customer advocate & compliance expert
Head of Engineering
Scaling high-throughput systems
Join our mission
Ready to protect your email reputation? Start your free trial today.