MailOdds

Hey Product Hunt 👋

We’re the team behind MailOdds.

MailOdds is a fast email validation API that helps you stop paying for bad addresses (bounces, disposables, typos) before they damage deliverability and sender reputation.

If you collect emails anywhere (signups, waitlists, lead gen, onboarding, invites), this is for you.

Here’s how it works:

1) Validate in real-time (single email)

POST /v1/validate with {"email": "..."}

You get a clear outcome (status) plus a recommended action like accept / reject / retry_later.

2) Clean lists in bulk (async jobs)

Create a bulk job with a JSON list (up to 100k), or upload CSV/Excel/TXT.

Download results as CSV or NDJSON, and optionally dedup to avoid paying for duplicates.

3) Plug it into your workflow

Add a callback URL / webhooks to get notified when bulk jobs finish

(with signature headers so you can verify the request).

Why you want MailOdds:

- Real-time decisioning, not just a yes/no

You get what to do next (accept, accept_with_caution, reject, retry_later), plus check details.

- Built for real-world lists

Bulk upload, progress + job management (cancel/delete), and flexible result downloads.

- Guardrails for deliverability + compliance

Suppression lists let you block specific emails, whole domains, or regex patterns

(and you can check suppression without spending a validation).

- Ops-friendly endpoints

Telemetry summaries for dashboards and monitoring, plus health status + webhook failure logs for debugging.

You can start free (no credit card) and be validating in minutes.

Happy to answer questions, talk integrations, or share implementation tips.