named senders changed everything.

the moment that made me rethink DMARC tooling: crying my eyes out looking at a report full of IP addresses - 52.24.128.5, 198.2.177.0, 149.72.134.0 - trying to figure out which services were sending on behalf of my domain

every platform shows you IPs.

I wanted to see names. Mailchimp, Google Workspace, Salesforce, SendGrid. not CIDR blocks.

so I built a sender identification system.

it maps IPs to known ESPs and cloud providers automatically.

when you look at your DMARC report in DMARCguard, you see "Mailchimp sent 4,200 messages, 98% aligned". not a wall of numbers.

this is the kind of decision that takes weeks to build and saves minutes every day.

bootstrapping means I get to make that trade.

https://dmarcguard.io/tools/dmarc-report-analyzer/

#DMARC #EmailSecurity #BootstrappedStartup #ProductDesign

Posted May 12, 2026, 3:00 PM UTC

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