Upload a list, get back every address marked valid, invalid, catch-all, disposable or unknown. You only pay for answers.
250 free credits when you sign up. No card needed.
results.csv
| [email protected] | valid |
| [email protected] | valid |
| [email protected] | catch_all |
| [email protected] | invalid |
| [email protected] | disposable |
| [email protected] | unknown |
A CSV or XLSX up to 100 MB — we find the email column for you.
Syntax, mail servers, disposable domains, and a live mailbox check. We never send an email to your list.
Every row back with its status, plus a valid-only file ready to send with.
| status | reason | suggested_fix | mx_host | |
|---|---|---|---|---|
| [email protected] | valid | aspmx.l.google.com | ||
| [email protected] | invalid | mailbox_rejected | mx1.oldfirmco.com | |
| [email protected] | invalid | no_mx | gmail.com | |
| [email protected] | catch_all | mail.meridiangroup.net | ||
| [email protected] | disposable | |||
| [email protected] | unknown | timeout | mta5.am0.yahoodns.net | |
| [email protected] | duplicate | |||
| not-an-email | invalid | syntax |
Credits never expire. Unknown, syntax errors and duplicates are free.
| Pack | Price | Per email |
|---|---|---|
| 1,000 | $6.29 | $0.00629 |
| 5,000 | $22.49 | $0.00450 |
| 10,000 | $25.19 | $0.00252 |
| 25,000 | $52.20 | $0.00209 |
| 50,000 | $99.90 | $0.00200 |
| 100,000 | $179.10 | $0.00179 |
| 250,000 | $359.10 | $0.00144 |
| 500,000 | $521.10 | $0.00104 |
| 1,000,000 | $629.10 | $0.00063 |
| 2,500,000 | $1,499.00 | $0.00060 |
| 5,000,000 | $2,114.10 | $0.00042 |
| 10,000,000 | $4,049.10 | $0.00040 |
Some mail servers time out, block checks, or defer every request. When we can't get a reliable answer we say so instead of guessing — unknown results are never charged. Yahoo, AOL and Microsoft 365 domains do this often, so lists heavy in those addresses will show more unknown and catch_all results. Gmail answers honestly.
A catch-all domain accepts mail for any address, real or not. We detect this and mark those addresses catch_all rather than calling them valid, because the specific mailbox can't be confirmed.
No, never. We talk to the receiving mail server just far enough to learn whether the mailbox exists, then disconnect. No message is ever sent.
Uploaded files and the addresses in them are deleted 7 days after a job finishes. Your job history and billing records stay; the addresses go.
No. Buy once, use them whenever.
We consider refunds for unused credits at our discretion — see the refund policy. Credits spent on completed verification aren't refundable, since the work was done.
