I will verify and clean your email list via API — 99% accuracy, bulk + real-time

Stop bounces before they hit your sender reputation. I clean and verify your email list via a fast, reliable API — 99% accuracy, with both bulk batch processing and real-time single-address checks.

What you get

A production-ready email verification and list-cleaning service delivered over a simple REST API. Send addresses, get back a clear verdict for each one so you only mail people who actually exist.

• Syntax + RFC validation — catches malformed addresses, illegal characters, and broken formatting before they cost you a send.
• MX and domain checks — confirms the domain exists and has mail servers configured to receive email.
• SMTP mailbox verification — pings the receiving server to confirm the mailbox is real, without sending an actual email.
• Catch-all detection — flags accept-all domains so you can decide how to treat uncertain addresses.
• Disposable / temporary email detection — filters out throwaway inboxes (Mailinator, 10minutemail, and thousands more).
• Role-based address flags — identifies info@, support@, admin@, and similar non-personal mailboxes.
• Free vs. business classification — distinguishes Gmail/Yahoo/Outlook from corporate domains.
• Typo / spelling suggestions — proposes corrections like gmial.com → gmail.com to recover otherwise-lost contacts.
• Deliverability score per address (valid / invalid / risky / unknown) so your rules can be simple.
• Bulk file cleaning — upload CSV or paste a list; get a deduplicated, normalized, scored file back.
• Real-time endpoint — single-address verification in milliseconds for signup forms and checkout flows.
• Clean JSON responses with clear status codes and per-address reason fields you can log and act on.

Plans

Tier	What's included
Starter	Real-time + bulk verification API access, core checks (syntax, MX, SMTP, disposable, role), JSON results, modest monthly verification volume, and email support. Ideal for a single project or a small list.
Growth	Everything in Starter plus higher monthly volume, catch-all and typo-correction signals, deduplication and list normalization, CSV bulk uploads, webhook callbacks for large batches, and priority support.
Scale	Everything in Growth plus the highest volume tier, concurrent bulk jobs, fastest real-time SLA, advanced risk scoring, dedicated onboarding, and direct support for integration questions.

How it works

1. Order and pick a tier — tell me your expected volume and whether you need real-time, bulk, or both.
2. Get your API key — I provision a key and send you concise docs with copy-paste examples (cURL, Node, Python).
3. Send your data — call the real-time endpoint per address, or upload/POST a CSV or JSON array for bulk cleaning.
4. Verification runs — each address passes through syntax, domain, MX, SMTP, disposable, role, and catch-all checks.
5. Receive results — get per-address verdicts plus a cleaned, deduplicated output file for bulk jobs (webhook on completion for large batches).
6. Integrate and ship — wire the endpoint into your signup form, CRM export, or pre-send pipeline. I help you tune thresholds.

Why choose this

• Real 99% accuracy, achieved through live SMTP checks — not just a regex that rubber-stamps anything with an @.
• Both modes, one integration — real-time for forms and bulk for existing lists, behind a single consistent API.
• Honest verdicts — risky and catch-all addresses are labeled as such instead of being silently passed as valid.
• Privacy-respecting — your lists are processed for verification only and not sold, shared, or added to any database.
• Fast bulk throughput with webhook notifications, so a million-row file doesn't block your workflow.
• Developer-first docs with real examples, clear error codes, and quick turnaround on integration questions.

Who it's for / use cases

• SaaS founders adding signup-form validation to block fake and disposable signups at the door.
• Email marketers cleaning an aging list before a campaign to protect deliverability and sender score.
• Growth and sales teams scrubbing scraped or purchased lead lists before importing into a CRM.
• Developers who need a drop-in verification endpoint instead of building MX/SMTP logic themselves.
• E-commerce stores validating checkout and account emails in real time to cut failed order confirmations.

FAQ

Q: How accurate is the verification? Up to 99% on deliverable mailboxes, using layered syntax, MX, and live SMTP checks rather than guesswork.
Q: Do you actually send emails to verify? No — SMTP verification confirms the mailbox accepts mail without ever delivering a message to the recipient.
Q: Can I verify a single address in real time? Yes — the real-time endpoint returns a verdict in milliseconds, perfect for signup and checkout forms.
Q: What formats do you accept for bulk lists? CSV uploads or a JSON array via the API; you get back a deduplicated, normalized, scored file.
Q: What do the result statuses mean? Each address is marked valid, invalid, risky, or unknown, with a reason field explaining why.
Q: How do you handle catch-all domains? They're flagged explicitly as accept-all so you can choose whether to mail them, rather than being marked falsely valid.
Q: Is my data kept private? Yes — lists are used only to verify your addresses and are never sold, shared, or retained for other purposes.
Q: How fast are bulk jobs? Large files process in parallel with a webhook callback on completion, so big lists won't hold up your pipeline.