Hey Product Hunt 👋 I'm Romain, the maker of Mailbuildr. I started Mailbuildr as an AI email builder: describe an email, get table-based HTML that holds up in email clients. It worked, but when I looked at what people actually search for, it was something else: "my HTML email breaks in Outlook", "how do I inline my CSS", "how do I test this before sending". So I'm relaunching around that problem. Today you can: - Preview your HTML email on desktop and mobile, free, no signup - Check it for compatibility issues across major email clients - Run a spam-risk check on the content - Or build an email from scratch with the AI editor and export clean HTML A few honest notes: the compatibility and spam checks are static analysis of your HTML, not a real send test through each inbox, and I don't want to oversell that. (Direct export to Brevo/Mailchimp isn't there yet: for now you copy or download the HTML) I'm building this solo, so I'd really value your feedback: What's the most annoying thing that has ever broken in one of your emails? Thanks for checking it out, I'll be here all day to answer questions and ship fixes. 🙏

MailBuildr

Make your HTML emails render right in Outlook and Gmail

Make your HTML emails render right in Outlook and Gmail