Email Deliverability Toolkit - 9 free tools to keep your email out of spam

Hey Product Hunt 👋 Corey here, co-founder of Truelist. Deliverability almost never breaks where you're looking. It breaks in DNS records you set up once, years ago: the SPF include from an ESP you no longer use, the DKIM selector that stopped resolving after a migration, the DMARC policy that's been sitting at p=none since the day you created it. We kept writing the same "go check your SPF/DKIM/DMARC" email to customers, so we turned the whole checklist into free tools. Nine of them: 🔍 Checkers that don't just find your records — they parse and grade them, in plain language 🛠️ Generators that build correct SPF, DKIM, and DMARC records for your setup 🚨 Blacklist + full deliverability checks for the "am I OK?" question No signup, no credits, no "3 free checks then pay." They're free because everyone with clean DNS makes email better for everyone — and because some of you will eventually have lists to validate, which is the part we charge for. Confession from launch prep: our own domain-reputation tool caught a missing SPF record on truelist.io a few weeks ago. We fixed it using our own generator. It works!