High Speed Verifier is a shareware speed verifier app and email client, developed by Tweak Marketing for Windows.
The download has been tested by an editor here on a PC.
High-speed software designed to remove dead emails from huge mailing lists
High Speed Verifier (HSV) is a high-speed software designed to check e-mail address for existence. HSV is capable of checking thousands of addresses per second. It can easily deal with mailing lists containing tens millions of addresses; moreover, it is with this list size that the program's highest performance can be achieved. HSV is offered as a solution for quick removal of garbage from lists with millions of addresses.
HSV works in a multithread mode, you can set the thread number from 1 to 600. One thread is used to check one address. So, if 600 threads are used, 600 domains are checked simultaneously, and HSV sends up to 15000 queries to DNS servers per minute, with peak traffic up to 700 kbps. Loading one DNS server so heavily looks very much like a hackers' attack aimed at disrupting its operation. Therefore DNS server software system might block you until the reason is checked by system administrator. It is also possible that DNS server will accept a limited number of queries from your address per second, and ignore the rest packets to reserve some free resources for processing queries from other users.
Compatibility and License
This download is licensed as shareware for the Windows operating system from email software and can be used as a free trial until the trial period ends (after an unspecified number of days). The High Speed Verifier 3.6.454 demo is available to all software users as a free download with potential restrictions and is not necessarily the full version of this software.
What version of Windows can High Speed Verifier run on?
High Speed Verifier can be used on a computer running Windows 11 or Windows 10. Previous versions of the OS shouldn't be a problem with Windows 8 and Windows 7 having been tested. It comes in both 32-bit and 64-bit downloads.
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