Email Validation Service

What is the e-mail checker and what are its features

As the efficiency of e-mail marketing is still high in 2020 and it will hardly become a third-grade source of sales in any observable future (remaining one of the most important ones), millions of users every day need to know whether the e-mail database they’re holding is actual. For salespersons, it is vital to lower the bounce rate of their e-mail marketing campaigns. For natural persons, it is good to know that an e-mail address they receive from a friend, colleague, or acquaintance is real. For anyone working with e-mails (hot and cold bases, including ones purchased from somebody), it is vital to know what e-mails of their database are:

  • real and used
  • existing as constant e-mails, not temporary ones
  • owned by people or bots
  • redirect to some aggregating e-mail (like of an admin) or remain in those e-mails without redirecting (the accept-all type of e-boxes)
  • included or not in blacklists and white lists
  • are spam e-mails or not.

After using an e-mail checker, the outgoing database is clean and purified, with only about 2.5% percent of unsuccessful delivery rate – compared to 80% unsuccessful rate of databases of e-mails (on average) that do not use any e-mail checkers. Also, it is believed according to various sources that every database after one year becomes outdated on at least 5% or more (as people change e-mails, stop using them, go to another job with a brand new e-mail, and forget passwords to them, etc.).


What is the e-mail checker

An e-mail checker is an online email validation tool, which helps define if some e-mail address exists and possesses the values that we’ve highlighted above. Not all tools give out the entire range of such information, though. Some of them do it in a simplified manner, highlighting only essentials like existing or not. If you want a professional reading with a dozen strings of results – then you should try 5-10 e-mail checkers before finding the one that suits your techie needs.

As for this tool we’re describing,, it offers several options of subscription to allow you to check e-mails one by one and in a bulk:

  1. ‘Pro’ for 10 dollars a month, which allows checking 1,000 e-mails 

  2. ‘Agency’ for 30 dollars a month, which allows checking 5,000 e-mails

  3. ‘Enterprise’ for 100 dollars a month, which allows checking 20,000 addresses 

  4. ‘Custom’ for the money that you can agree individually with the management of the website, which allows checking 100,000 addresses at least and 1 billion of them at most (+ checking the telephones of email address owners). 

As it becomes obvious from the structure of the website, names, pricing, and used words in the description of the page, is a part of the same company that owns the website. Or they are so heavy competitors that clone the subscription packages’ names and features of one another? Coincidence? Maybe…


The principle of work of an e-mail checker: how to check if e-mail is valid

To make users know the results of the check, every e-mail tester (including this one), uses the sequence of technical steps:

  1. Pinging the e-mail server to start the e-mail address verification. If it gives a response, it’s domain name exists, so, probably, the e-mail address exists, too. At this stage, it is checked if all ping types are received and answered the same. If it does not matter what tech question is asked from a server, as it gives the same information to every one of it, it means that such an e-mail server is unreliable and, highly likely, it is not worth sending e-mails to this server, as one cannot be sure about any e-mail addresses existing there. 

  2. Connecting to it and exchanging with tech commands (questions and answers), which provide further information about the e-box: the correctness of the name, belonging to a human or a bot (existing in blacklists is an external check), replying to all types of tech questions and verifications, and additional stuff.

Some other e-mail verification tools do additional verifications addressing external sources to find out more but it seems like this tool only connects to the e-mail server and not goes beyond that. 

How to check if an email is valid? Is it really working? Well, we’ve entered the e-mail address several times to check email online and each time, it returned us no result (as if we did not fill in the checking field). After several unsuccessful attempts, it did answer us – that we’ve reached the limits of checks from 1 IP. So it’s hard to tell of this email address checker really works. 


Who might find an e-mail verification useful tool?

If you’re working with e-mails in your daily activity, you might have the need to check email occasionally. The list of potential users we can come up with is as follows:

  • E-mail marketing companies

  • Owners of websites who collect e-mails from their prospects to turn them into clients in the future

  • Individuals who want to check some e-mail before composing a letter

  • Various sales companies

  • Newspapers with a large subscription base.

In all cases, it is about saving time and effort. For companies, which send hundreds, thousands, or millions of letters each year or even every month, it is also substantial save of the budget, as it costs lesser to check 1 e-mail then to send a letter to this e-mail. Also, if a database of, let’s say, 100,000 e-mail addresses are cleansed to become only 20,000 in capacity – it means you have to send 80% fewer letters and thus, the address-sender is less likely to enter spam lists and blacklists (email spam test). 

Also, even if your e-mail base is legally obtained and nurtured through years, every year, its value declines due to natural reasons. Some users stop using the indicated addresses, some change jobs and, thus, attached e-mails, some just register on another e-mailbox service. Also, people die, forget passwords, etc. All these reasons make even the super-caringly gathered database to become 5%-10% outdated each year, increasing the bounce rate (which you don’t want in your mailing campaigns).

Is there any API that developers could use?

As the company says, it is working hard on developing an API. Currently, it is not present. But its workers can’t confirm the time of delivering it to the public. You can use the internal capabilities of the interface to do checks so far. 


What are the benefits of an e-mail checker?

  1. Reducing the bounce rate. Every mailing campaign has a bounce rate – a number of undelivered e-mails or those returned to the sender. A large percentage of letters remain unread – because it is forwarded, goes to spam, deleted, or there is no human behind a specific address. Before using an email verifying software services, the bounce rate can be up to 80%. After, it is usually lowered to 2%-10%.

  2. Increasing the efficacy of mass sending, reducing the budget spent on it (as a rule, the companies-senders charge per 1 sent letter, never mind its delivery status).

  3. Keeping your database up to date and relevant, getting rid of the garbage.

  4. Lowering the time needed to send to only alive e-mails after you check if the email is real (which is important if there are hundreds of thousands or even millions of e-mails sent during one campaign).


Frequently asked questions

Is the result of this Gmail checker completely actual?

No, because not all e-mail servers play the rules of the game and respond in the way we need it. But it is more than 50/50 assuredness in the issue of does this email exist and the cleansed database will become significantly more relevant after the check than before.


Will a verified e-mail bounce?

In about 2%-10% of cases, it bounces. The rest is a pretty high result, though.


What is a “risky” status in a lookup?

It means that during the check, it has been found out that a mail server accepts all letters disregarding what is the name of the address even if the name is meaningless like ‘uiby*)[email protected]’.


Is this a free email verifier?

Well, it is possible to do a half dozen free checks but it is not completely free as for the rest.

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