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How to improve effectiveness of verification?


This article tells you about the specifics of verification, the factors that influence its effectiveness, and ways to improve the results of the check.


Check speed


You probably already noticed that Email Verifier validates email addresses pretty quickly but does not do it immediately. In fact, the scanning speed depends on the size of your list, your Internet connection, and its speed.


It is important to understand that if your list contains more than 10,000 email addresses, the program will take some time to analyze all of them. We recommend launching the checking process at night. That way, in the morning you’ll have your results ready, which can then be exported and used for mailing.


Check status


If you have already run the program and checked even smaller lists, you are probably familiar with the statuses that are assigned to emails by Mail Verifier.


In general, Atomic Mail Verifier displays 4 basic email address statuses:


  • Unverified

  • Correct

  • Incorrect

  • Skipped

Unverified — the initial status of each email address uploaded into the program.


Correct — as you can guess from the title, this status is assigned to existing email addresses. Sometimes variations are possible, such as “inbox exists”.


Incorrect — this status is assigned to email addresses that are invalid. Usually the program will indicate why each particular email is considered “bad”; for example, “domain does not exist”, “inbox does not exist”, etc.


Skipped — we’ll get back to this status in more detail below.


Why was it “Skipped”? Which addresses are skipped by the program and why?


Email addresses are skipped when the program cannot check them. This can happen for the following reasons:


IP Address Reputation


If the IP address the Verifier is connected to is blacklisted, blocked or has a bad reputation among the email servers, the requests the program sends to determine the existence of a contact will be rejected.


Also, some email servers (for example, yahooo.com, aol.com, hotmail.com, outlook.com, etc.) prohibit check ups via dynamic IP addresses. In this case, Atomic Mail Verifier will only be able to help you when you’re working with a static IP address.


Grey lists, Greylisting


Temporary deviation of a request may also occur because of greylisting – technology that constrains the first attempts to verify email address due to the anti-spam policies of mail servers. In this case, the contact status might be “Unavailable” or “Try again later”. It therefore makes sense to repeat the check-up of addresses with such statuses later on.


Verification Restrictions


In order to explain this point, I’ll have to take a moment to explain how Mail Verifier actually works. Without going into too many details, the program simulates sending messages to your contacts by sending out requests and receiving responses from mail servers.


Some mail servers do not allow for such a simulation. They require a real message to be sent to the email address. As a result, the program cannot verify such contacts, because it cannot send out emails.



Check Up Effectivity


Based on the above, it is safe to say that the Atomic Mail Verifier has a high percentage of effectiveness when checking email addresses. However, the program does not provide a 100% accuracy level.


Why? Because of the “Skipped” status and the reasons behind it.


In order to increase the speed and the success of the check up, the program includes the following consumer rules:


  • You initially, once and for all, set statuses for the addresses that cannot be verified.

  • The program automatically assigns a determined status, this is done automatically so you don’t have to worry about analyzing such contacts.

  • This leads to increased speed and success of the check up.

You can find out more about setting up Atomic Mail Verifier in the program’s user manual (go to Help -> About or simply press F1).

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