Sumit Raj · Email deliverability architect

I fix email that does not arrive.

For three years I built and ran a DMARC monitoring platform across 2,000+ client domains, and the pipeline behind it that analyses around 2 million outbound email records a day from aggregate reports. Those clients were banks, insurers and SaaS companies, and the domains involved were the ones their invoices and password resets go out from.

When a client's mail stopped arriving, the ticket came to me. It was never a dashboard reading amber. It was a finance team whose invoices were being answered by somebody else, a payroll run bouncing at 2am, a marketing domain that had quietly been on the wrong side of Gmail's filters for a month. Every one of those turned out to be four or five characters of DNS.

That is the job. It means records that say what you mean, authentication that survives a forward, and a policy strict enough to stop somebody impersonating you without taking your own mail down with it. Most people can publish an SPF record. Knowing which change breaks payroll on Monday is a different thing, and it comes from having broken it, fixed it and watched the reports afterwards.

Sumit Raj on LinkedIn