ProCrawl high speed email extractor will search mail servers for emails. This is the ultimate way to find emails since they are verified as they are collected. ProCrawl high speed email extractor will search mail servers for emails. This is the ultimate way to find emails since they are verified as they are collected. The software will simulate the sending of an email, but without sending any email it will stop after the mailserver replies and tells you if the recipient is valid or not. It can easily collect 700,000 emails/hour on a 56k dialup connection. If you are on a DSL or Cable connection you can with ease expect to find several million emails/hour. You can load a large list of domains and simply click on start. The program will than detect all invalid domains and servers that return invalid responses. If it finds an acceptable domain, the email extraction procedure automatically begins. You can expect your lists to have at least 90% deliverability when ProCrawl is done. A free professional username generator is also included in the program, it will help you create new unique users from your current wordlist. ProCrawl is not only the fastest mail server email extractor, it's also the most complete.