It can perform several checks against an email address including syntax, dns MX lookup, top level domain name validation, and even mail server validation. Offers you two processing modes fast and deep. In its fast mode Bulk Verifier works extremely fast being able to process mailing lists containing dozens of millions of e-mail addresses at a speed of several thousands addresses per second. This mode does not ensure the highest accuracy of checking/cleaning but is optimal by expended time and traffic and provides quite sufficient results. We recommend the fast processing mode ofīulk Verifier as a high-speed tool for sifting obvious rubbish out of large mailing lists containing millions of e-mail addresses. Mode (default), Bulk Verifier works significantly slower but provides much more precise results. Optimal data amount for this mode is 70.100 thousand e-mail addresses. Pasting some email addresses for validation, it begins to verify each e-mail address.ĭomain and email verifier tool can process both plain list of e-mail addresses / domains where each line contains one item and files of more complex structure We recommend the deep processing mode ofīulk Verifier as a slow but high-quality tool for checking of not very large mailing lists. Like CSV file where lines represents multi-field records of the same structure (i. containing the same fields separated with the same delimiter). It’s supposed that one line of an incoming file contains one e-mail address and/or one domain.įor example, you can export a worksheet of an MS Excel file to check availability of e-mail addresses/domains listed there. To specify the format of the incoming file please turn to the Options dialog. This advanced email verifier stores domain check results in the internal cache. If another e-mail address from the same domain will be found in the same mailing list, Bulk Verifer will not request the DNS server once again but will use the result from the cache. Cache size is limited only by the memory size of your computer. It takes 40 bytes of memory to store the result of one domain check. The time spent to find a previous check result in the cache practically does not depend on the cache size.īulk Verifier (Options\DNS) also influences deeply the application Thus, it will take 40 MBytes of memory to store the results of check of one million different domains. If Bulk Verifier does not receive a response from a DNS server in a specified period of time (Options\Timeout, in seconds), it makes new attempts using another DNS service from the list each time. If all these attempts failed, the e-mail address is listed as not checked due to the connection timeout. The bigger the list of DNS servers which can be used by E-mail Verifier, the less is the probability that a couple of DNS servers which have operating problems will affect the application’s performance. You can define up to 600 threads which will be used simultaneously (one thread is used to check one e-mailĪddress/domain from mailing list and determine if domain/e-mails are still This bulk domain and email verfier is a multi-thread application. Please note that using the maximal number of threads is not always the best choice. For example, if you use 600 threads, the application checks 600 domains at the same time sending up to 15 000 requests for DNS servers per minute. At that the traffic may amount to 700 kbps. Bulk email verifier reviews verification#Ī DNS server’s software may regard this as a hackers attack and block you up.eMail Verifier is multithreaded, providing high speed verifying. It can verify single e-mails or huge lists. 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.ĮMail 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 70-80% of "dead" email addresses.ĮMail Verifier is a very effective piece of software that can verify over 10 e-mails per second. Addresses for email are extracted from a Domain Naming Server (DNS) and eMail Verifier tries to connect with SMTP-servers and simulates the sending of a message. 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.ĮMail Verifier works on the same algorithm as ISP mail systems do.
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