From first check to next send

Your list.
A clearer next step.

Bring your addresses. Understand the results. Keep every answer connected to the row it came from.

Start free See the workflow

Clear results and credit rules, from start to finish.

Your original listAddresses, names, and source rows

FairValid verificationReview · check · understand

Results you can work withOriginal rows + clear outcomes + credit history

Workflow illustration. No real addresses are checked.

01 Bring

Bring the addresses you already have.

Start with a single address, upload a CSV or TXT file, paste a list, or choose contacts from a connected source.

Keep the names, columns, and source identity that make your list useful.

Explore list imports

contacts.csvSample data

Upload a filePaste addressesConnect a source

01alex@example.comAlex

02sam@example.comSam

03alex@example.comAlex

Your original columns stay with your rows.

02 Review

Review first. Then run your check.

Inspect your selected rows and the credits that may be reserved before you start. Repeated addresses share a result within the run.

Your original rows stay intact, without an extra check charge for each repeated row.

Understand credit holds

Review your selectionSample data

Source rows: 3
Unique addresses: 2

One repeated addressRows 1 and 3 share one verification result.

Maximum credit hold2 credits

A hold reserves credits. It is not a final charge.

03 Understand

See what the result actually means.

Track progress as your addresses are processed. Review valid, invalid, catch-all, and unknown outcomes with their credit effect.

Still checking means no final answer yet. A pending state never becomes a positive result just because time has passed.

Understand the results

Understand each answerSample data

Validalex@example.com

The check returned a usable positive result.

1 credit used

Unknownsam@example.com

A dependable answer was not available.

0 net charge

Pending checks remain separate until a final result is available.

04 Use

Take the context with you.

Filter and review your results, compare runs, and export the outcome alongside your original source rows.

You decide what happens next. Verification provides evidence; delivery is never guaranteed.

Explore the guides

Results with your rowsSample data

01alex@example.comValid

02sam@example.comUnknown

03alex@example.comValid

3 rows preserved. Repeated rows share one result.

Example: 2 unique checks, 1 credit charged.

An answer with context

Every outcome, explained.

A result helps you make a decision. It never promises inbox delivery.

Outcome	What it tells you	Credit effect
Valid	The check returned a usable positive result. Delivery is never guaranteed.	1 credit
Invalid	The address did not pass the check.	1 credit
Catch-all	The domain may accept addresses that do not exist. Interpret with care.	0 net charge
Unknown	The check could not reach a dependable answer.	0 net charge
Still checking	The selected address has no final result yet.	No final charge yet

Technical failures and unprocessed work have no net charge. Reservations are released or returned; returned credits keep their original expiry rules.

Read the result guide

A little certainty before you send

Start with one address.
Build from there.

300 free credits each month. Choose an exact top-up or a monthly plan when you need more.

Start free Review pricing