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Lastest news:
6 Oct 2015
Fixed issue when sometimes happens that wrong formatted file was in "waiting" status permanently.
27 Aug 2015
"API: bulk verification" updated, now you can get number of "valid", "invalid" and "unknown" emails before verification will be finished
15 Aug 2015
now you can see number of "valid", "invalid" and "unknown" emails during verification
8 Aug 2015
added information about number of emails that going to be re-verified when "re-verifying some emails" going
8 Aug 2015
important fix for issue when some valid emails was marked as "unknown" (we keep not taking money for "unknown email")
7 Aug 2015
changes for speed up verification for files with low number of emails
4 Aug 2015
important fixes vs new "smart" anti spam systems (such systems working on some paid or private email services).
25 Mar 2015
we going to upgrade database for "bulk verification" tool on Saturday, verification of files will be stopped for 30-90mins.
25 Mar 2015
fixes for verification process
24 Dec 2013
fixes of verification speed for emails with big number of dead mx records
13 Dec 2013
added: cancellation button, now you can finish verification any time and do not wait until all emails will be verified

Verify Email for Exist API service

Common information

Our API service can be used for verify emails in automatic mode, so you do not need to upload emails to our service manually.
This email verification method require basic programming knowledge and consist of HTTP request to our service.
Verification speed of email box is linked with kind of email service because some email services using 30-60 seconds delay before answer.

We strongly recommend to use it only for basic verification of not big amount of emails,
this verification method is not compatible with our "anti-greylisting" feature.
If you want to get better speed and use our "anti-greylisting" feature - use bulk email verification instead.


  • Verify email account on more than 95% of email services
  • Pay per result (price from 0.5$ to 0.1$ per 1000 requests)
  • Emails list safety guarantee (we will not use emails for any other cases or resale)
  • Automatic processing without manually email uploading
  • Instant verification result
  • Pay per result, so do not pay for "unknown" emails

Prices per 1000 emails verification

Our email verification rate per 1000 emails linked with number of processed entries per your account, see pricing table.

0-10,000 10,000-30,000 30,000-100,000 100,000-500,000 500,000-...
$0.5 $0.4 $0.3 $0.2 $0.1

* If you want to verify more that 10,000 emails you can contact us and get lower rate.
** Email verification rate will not be increased, for example if you have process 500,000 emails - all next emails will cost $0.1 too.
*** For example, you initially pay $0.5 per 1000 emails, after you will verify 10,000 emails - your next 1000 emails will cost $0.4.

Email verification protocol

Verification based on one HTTP request to our service.
Request url is[secret_key_from_your_account]&email=[email]
Input data for API:email
Output of API:{ok|fail|unknown}

ok - email address exist and correct
fail - email address not exist
unknown - we can't verify this email box (you do not pay for it)

Our API working not so fast - because it's taking lots of time for checking server (from 2 seconds up to 1 minute).
Incorrect emails taking more time, as usually it more then 5 seconds per email.
Notice: format can be customized by customer request.
Verify emails in two easy steps!

Few reasons about why this API better then some local script

  • Biggest part of ISP and servers do not configured for email verification
  • Our API is up to date, and always compatible with most user email servers
  • Your server will not be banned by email server
It's the cheapest offer for email verificartion API!

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