Get assured your mailing list contains only real emails addresses, get rid of bots and inactive users




E-mail checker - Turns your cold mails - to hot leads.


E-mail checker - Validate emails through social networks.


E-mail checker - Turns your cold mails - to hot leads.


We are a team that validates emails and phones using social networks for the past 3 years. Previously, we did it manually and it took from 3 weeks to a year, but at the moment it takes from us only 15 minutes to check 1 000 000 email addresses.

Our service will be useful to those who are working every day to increase conversion in email mailings and want to decrease bounce rate. We will also be useful to those who want to know who is behind that email or phone in order to save their time and money.


$ 10/mo
1,000 emails to validate included
$0.005/1 mail overage charge

$ 30/mo
5,000 emails to validate included
$0.004/1 mail overage charge

$ 100/mo
0,000 emails to validate included
$0.003/1 mail overage charge

EPIC 100,000+ emails to validate included
LEGENDARY 1,000,000,000+ emails to validate included + telephones

E-mail checker

The importance of relevant information in the 21st century is one of the key points of the existence of modern society. One of the cornerstones of it is email. A regular office-working person may send and receive hundreds of letters every day but even if you are not connected to the office routine, you must probably have tens of them in a day anyway. When you are sending a letter in hope for a response, it is vital to know that the address you’ve sent a letter on really exists and that there is a person behind it who will be able to read it and give you a feedback or make a purchase (in the case with commercial mailing). So it is hard to overestimate the importance of having a correct email address in your hands. You can find the help of an online email verification service highly useful.

Email checker: the definition

Email checker is a type of Internet site that has technical capabilities of checking the existence and usability of a specific e-mail address. When you enter it, in most cases, you only need to insert the checked address into a field and press a button to shortly receive the result of checking email online. People often ask how to check if the email is valid. Here on our site, there is such an opportunity. Or you can use any other email address checker that you find luring. The sites have the background logic that allows them to connect to a specific domain name and check email online – such approach is more advantageous compared to the checks that may be done using only internal database of a site (if any), as any non-online information may be considered de-facto outdated and thus, doubted. So we personally recommend you to rely only on those email testers that, like ours, do all the procedures online.

An email verifying: how it works technically

When you enter on the site of one of many existing email verification services, the major thing you see is a big field of entering the e-mail address to test email. When you click on the ‘Go’ button or whatever it is called there, the site sends the request to the domain server calling to it to understand if it exists in the first place. When being reached, the domain server is then asked with a set of varying commands about its general properties and the properties of a specific address. Every e-mail address has a structure like ‘’. This is called ‘the syntax’. The first thing that is being checked is the syntax – if it is correct or not. If not – then in almost 100% of cases, it cannot send or receive e-mails. When the ‘@’ symbol missing – this is the worst possible e-mail address’ syntax mistake. Then, based on the ‘questionnaire’ submitted to the domain, a number of answers are formed to be represented to the user. But before simply to be shown to him or her, they also undergo the internal interpretation based on the correlation of values, just to make sure that things match one another. These may be:

  • if an address is not a dummy or ‘bad’. The regular address looks like ‘’ or ‘’ while the dummy one is something like ‘’. It is often filled with meaningless characters that a real person with a sane mind would have never come up with. Such addresses are used as ‘one-days’ ones or as ones that people receive spam from. They may also be publically used e-boxes where there is no person behind or they are used collectively.
  • if a domain does not exist or does not support the check, then an indefinite or negative check result will be generated.
  • if a server replies all the same information to all checking requests, it is impossible to say for sure whether this or that address in this domain exists.
  • if the specific address is included in the checker’s blacklist or is the email address provided by a well-known disposable e-mail address provider. It means that you don’t want such addresses included into your mailing list as they, as a minimum, will ignore your letters or, as a maximum, will capture your address to include into their spam lists.

What are the possible options of verifying email address responses?

In the end, the user sees the interpreted results, which can largely vary and include such information:

  • good, valid, ok, ‘deliverable’ classification, no high-risk factors detected, safe to send mail – these all are versions of ‘good’
  • bad (saying reasons why or not) or risky email type. It is most often met when there is no existence of DNS on the domain
  • the domain is good but the server doesn’t allow the specific e-mail address verification
  • unknown or mail server failed to respond
  • has IPv4/IPv6/MX/SMTP server validation/if ASCII domain internationalized or not and other technical stuff – that’s just an additional information
  • the specific address is included into the checker’s blacklist or white list – a caution warning for you
  • syntax is correct/incorrect
  • spam e-mail (which is bad)
  • the external mail exchanger accepts fake and non-existent e-mail addresses so the provided e-mail address may not exist – that is an equivalent for ‘catch-all validation’ – that’s bad if yes.
  • the existence of the individual mailbox cannot be verified/timeout occurred/retry later/unverifiable
  • the email address is provided by a disposable e-mail address provider
  • what kind of provider is it – free or paid and is there any honeypot hidden.

Depending on the approach to every single result or its combination received from several checkers used simultaneously, you may decide to elaborate your own vision of sending letters to this or that address. The general advice is that if the address is ‘good’ by most of the checkers, it should be included into your mailing list, as the experience tells that around 95% of letters reach the destination when sent on such an e-mail.

What is the profit of email validation?

If you think that sending letters just to anyone is a good decision, then we will show you now it is not:

  1. Time. Being the most precious resource that cannot be replenished or increased, time is spent irreversibly. Do not allow wasting your time sending letters that will not reach the beholders’ eyes. That also includes writing a personified letter.
  2. Money. No matter if you are sending 100 or a million letters, they cost you something. This may be a fraction of a cent for a piece but altogether, they exhaust your marketing budget, which would otherwise be spent wisely on something really useful for your company or you personally.
  3. Bounce rate. 5 out of 10 marketers on average say that more than 80% of all email addresses are invalid for this or that reason, including being outdated. When you update your database before sending letters just to everyone, you get not 20/80 but 80/20.
  4. Having an updated database will make it possible to work with e-mails more thoroughly. Like, for instance, you can work with the purified base in order to find the bigger online presence of this or that person and find more connections, which you then can include into your cross-selling plan (for instance, they are connected with Facebook, Instagram, Google, YouTube, and other well-visited sites).

FAQ about confirming email addresses

  1. Is there API? Each site has its own answer to this question. In well-made ones that are usually paid, you will see API information – because it allows batch checking and money earning for those sites for their services. Some sites do not allow many free checks per day/month, relying on a subscription or payment for each individual address checked. Some of them have dedicated apps for that.
  2. I am the owner of the checked address. Do I get notified when someone checks on me? No.
  3. Does anyone store and save the data about checks? Almost every site does that. Someone store it just for milliseconds, which are required to do the check and then it gets irrevocably erased. Other sites may store it for hours or days to make sure a user has access to the history of checks. And some part of sites stores it permanently replenishing their database to make a profit of the use of addresses in the future (like selling them to spam bases). Our site does not store the data more than it is needed to do the online check and certainly does not sell or pass any information to anyone.
  4. When the email address is ‘verified’ – how good is it for sending emails to it? There is no 100% certainty but it is over 95% of assuredness (based on our personal experience) that a letter will be sent there successfully. To make sure that the address is ‘good’, we recommend you to use multiple email checkers and combine their results into a big bulkiness to estimate the eventual outcome. This will increase the chances of trustworthy validation.
  5. So there is a big difference in check results in varying online checkers. But why? There are many programmers in the world. They all deliver a varying quality of a product. Some mailing servers can normally correspond with these programs and some don’t. There may also be other factors like the busyness of the server in the moment of the check, as well as incorrect request of this or that email checker that reaches the server for feedback. We’re trying to keep our product as tuned and effective as possible, to satisfy all your demands.