Resolve any email address to its webmail login URL from your own code. It's free to use right now, no key required. A paid tier with higher limits and support is on the way.
POST an email address, get the login URL back as JSON. No signup, no key.
The response includes best_match (provider, login URL, confidence), candidates, evidence (MX records + mail-client settings), and honest notes when we can't be sure. Add ?nocache=1 to bypass the cache.
Be first to know when the paid tier launches, with higher limits and priority support.