This is a Professional e-mail address verification tool.Rapid and accurate test-mail address is real and effective. Key Features Up to 5,000 threads set free(Depend on your machine).Can verify about 150000 e-mail per hours. Only verify e-mail is valid(Real exist) or is invalid and nothing is send to the email recipitent. Verify accuracy can be established Verification-mail filtering. Fast Import or export speedï¼?Support TXT, EXCEL, FOXPFO, DB, XML Etc. Support OS:Windows 2000/XP/2003/Vista+Microsoft .NET Framework 2.0