“Building a deliverability checker – what would make it useful?”

Hey everyone,

I'm an indie developer working on a personal project to help with email deliverability. I'm frustrated by how complicated SPF/DKIM/DMARC setup is, so I built a tool that scans domains and generates DNS fixes.

Where I'm stuck:

• What's the #1 thing you'd want a tool like this to tell you?
• Are there any checks you think are overrated or missing?
• How do you currently test if your emails will land in inbox vs spam?

I'd genuinely appreciate your thoughts. If anyone wants to test it and break it, I'll DM you the link – don't want to spam here.

Thanks for reading!