Josh Purvis

I founded DomainCanary, a DMARC monitoring tool. It watches a domain's SPF, DKIM and DMARC records, reads the reports mail providers send back, and tells you when something breaks.

Most domains fail to set up email authentication properly. They usually find out only after messages start dropping or someone spoofs their email. I built DomainCanary so they find out sooner.

I also built SignupBouncer. It checks each new signup for disposable addresses and the same person signing up again, so apps with a free tier stop giving their credits away to the same few people.

You can reach me at hello@joshpurvis.com.