Home Products Downloads News Store Support

Verifying e-mails - User Guide | eMail Verifier

Verifying e-mails - User Guide

eMail Verifier

Compatible with MS Windows Compatible with MacOS

3.- Verifying e-mails

Type an email address or load a list from a file stored on your hard disk. If you need to verify a single email address, just type it as is (ex. [email protected]). If what you want is to verify a list, select the 'Email list file' radio button. If the list on screen is empty you will be automatically asked to select a file. If it is not the case, press the 'Load List' or the 'Select...' button. A file selector will let you choose the file. eMail Verifier then loads the selected file adding all entries to the list on screen.

Once you are ready to start the verifying process, press the 'Run Test' button. eMail Verifier first sorts the list by domain in order to boost lookup speed and automatically starts querying DNS server(s) for each address Mail Exchanger(s).

A Mail Exchanger, also known as Mail Transfer Agent (MTA) or Mail Exchange Server is, in the context of the Domain Name System, a computer program or software agent which transfers electronic mail messages from one computer to another. On the DNS lookup response, the Mail Exchangers come as MX records. They are part of the DNS information for a domain. Each MX record has a preference or priority. eMail Verifier can be forced to use the highest priority Mail Exchanger only or from highest to lowest (see Settings).

If no Mail Exchanger is found, the email address is mark as 'Bad'. If the DNS lookup fails, the email address is mark as 'Unable to test' in order to avoid deleting valid addresses because of temporary problems with domains transfers or DNS server failures. If a Mail Exchanger is found, eMail Verifier tries to connect to it and simulates the sending of a message. It does not send the message though - eMail Verifier disconnects as soon as the mail server informs the program whether the address exists or not. In fact, eMail Verifier collects the server response. That response is analyzed to determine if the address is valid (or not) by using a built-in set of rules. Note that you can optionally issue a 'VRFY' command but it is no longer recommended (see Settings).

Once you are finished testing, you will get more information in your list. The email type, whether a Mail Exchanger were found or not and the verifying process result. Those results are very easy to understand.


Valid: Email has passed all tests successfully and has been verified as valid.
Looks valid: Email has passed all tests but the server response is indefinite or vague.
Looks bad: The server response indicates email is likely bad, disabled or hidden.
Bad: The server response is very clear, the address is bad.
Unable to test: No Mail Exchanger were found for a given email address.

In addition eMail Verifier also displays overall results and ratios including a chart to help you find out about the quality of your list. You will often find out that most lists contain a huge amount of bad addresses however it mostly depends on where or how you got it.


Valid Addresses total includes 'Looks valid' and Bad Addresses total includes 'Looks Bad'. Progress shows Tested/Total. Current is the entry number on list which is being processed. Retries count how many times eMail Verifier has tried to finish testing the list. It is like a general timeout auto-reconnection in order to catch late processes.

Recent questions from our eMail Verifier users
  Why do I get timeouts when testing given addresses Screenshot
  How can I validate Hotmail and Gmail email addresses? Screenshot
  Does eMail Verifier need port 25 or an SMTP relay to work? Screenshot
  Can I make payments with bitcoin ? Screenshot
  eMail Verifier stops at 30% of the email file to be analyzed Screenshot
  Error #22 when trying to verify a list of email addresses Screenshot
  All entries timeout Screenshot
  Keeping output original Excel and CSV file format Screenshot
  Not able to verify anything Screenshot
  Bad Gmail addresses marked as valid Screenshot
  Error with every email-adress (even my own, working one)
  How does eMail Verifier compares to online services? Screenshot
  The program does not verify any address
  eMail Verifier is timing out
  Bad e-mail addresses are sometimes marked as valid

Maintain clean mailing lists checking the validity of recipient's e-mails addresses. eMail Verifier can save time and money for businesses who send newsletters to their clients, nonprofit organizations who send bulletins to their members, or any person or business that needs to maintain a clean e-mail contact list.

eMail Verifier is your powerful solution for the standard "message delivery error." Email Verifier verifies every e-mail address from a given mailing list, allowing you to determine 80-90% of "dead" email addresses.

eMail Verifier works on the same algorithm as ISP mail systems do. Addresses for e-mail are extracted from a Domain Naming Server (DNS) and eMail Verifier tries to connect with SMTP-servers and simulates the sending of a message.

It does not send the message though - eMail Verifier disconnects as soon as the mail server informs the program whether the address exists or not. Email Verifier is a very effective piece of software that can verify over 10 e-mails per second .

It can verify single e-mails or huge lists. (eMail Verifier is multithreaded, providing high speed verifying).

▾ Last videos, Online events and Q&A Sessions ▾
▾ Last customer reviews ▾

🔐 Secured by Sectigo SSL | UptimeRobot - Site Loaded properly