Email Checker
Email Authentication Reports
Per-domain email deliverability audits — SPF, DKIM and DMARC records and policy strength, MX configuration, and DNSBL blacklist reputation. Open any domain below or run a fresh check on yours.
Popular domains
google.comyoutube.comapple.commicrosoft.comamazon.comfacebook.cominstagram.comlinkedin.comtwitter.comx.comstripe.comvercel.comgithub.comgitlab.comopenai.comanthropic.comhuggingface.cocloudflare.comfastly.comsupabase.comfirebase.google.commongodb.compostgresql.orgredis.iodocker.comkubernetes.ionextjs.orgtailwindcss.comreact.devnodejs.orgpython.orgrust-lang.orggo.devruby-lang.orgphp.netaws.amazon.comazure.microsoft.comdigitalocean.comheroku.comnetlify.comrender.comfly.iolinode.comovh.comnotion.soasana.comtrello.commiro.comlinear.appslack.comzoom.usdropbox.comatlassian.commonday.comfigma.comcanva.comsketch.comdribbble.combehance.netadobe.com