OptimaVerifier
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Email data quality

Clean email data your team can trust.

OptimaVerifier validates every address with a real-time SMTP check, flags risky catch-all domains, and removes invalids before they hurt your deliverability. From $1.08 per 1,000, and credits never expire.

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Up to 100,000 free to start. No card required.

Permission-based verification only, for cleaning lists you already have consent to email.

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Real-time single check
1M
Addresses per bulk job
Unique-only
Duplicates never billed
No expiry
Credits stay yours
What you get

Everything you need to keep a list healthy.

Accurate verification, risk detection, and bulk cleaning in one place, priced so you can run it on every list.

Real-time SMTP checks

Every address gets a live handshake with the mail server, not a lookup in a stale database. Results reflect the mailbox as it is right now.

Catch-all and risk flags

Catch-all domains accept everything, so most tools give up. We probe deeper and flag which addresses are risky, so you keep your sender reputation clean.

Bulk list cleaning

Upload a CSV or POST a JSON array of millions. We dedupe before billing, so you only pay for unique addresses, and export a valid-only list.

A clean developer API

One key, single and bulk endpoints, CSV export, and llms.txt for your agents. Verify your first address in about 60 seconds.

Pricing

Pay for what you verify. Nothing else.

No subscription, no seats, no expiry. Buy credits once and clean lists whenever you need to.

$1.08/ 1,000 emails

Drops to $0.14 per 1,000 at volume. You only pay for unique addresses.

Up to 100,000 verifications free
  • Pay as you go, no subscription
  • Only unique addresses are billed
  • Credits never expire
  • Single, bulk, and CSV export included
Start free
FAQ

Questions, answered.

How does verifying protect my sender reputation?
We check each address without ever delivering your campaign to it, so invalid mailboxes and dead domains never receive a send. Cleaner lists mean fewer bounces, fewer spam traps, and better inbox placement over time.
What do valid, invalid, and catch-all mean?
Valid means the mailbox accepts mail. Invalid means it does not exist. Catch-all means the domain accepts everything at the server level, so a real mailbox cannot be confirmed, and we flag it as risky rather than guessing.
How accurate is it?
Every address gets a live SMTP check against the real mail server instead of a lookup in a stale list. The engine also respects each server rate limit, so checks are not blocked or throttled into false results.
What can I upload, and what do I get back?
Upload a CSV or POST a JSON array of up to a million addresses per job. Download a clean, valid-only CSV, or read the full results back over the API with a status for every address.
Do credits expire?
No. Buy what you need and use it whenever. Duplicates are removed before you are charged, so you are only ever billed for unique addresses.

Send to real people, not bounces.

Claim up to 100,000 free verifications and clean your first list today. No card required.

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