• MailTester
  se även Mail relay testing
  Check if an e-mail address is valid or not. Find out why a mail bounces. Get technical information about a mail account and it's mail (SMTP) server.
  check e-mail email lookup mail protocol smtp test verify vrfy
  in e-post > verifikation with e-post verifikation by 3 users
• SearchBug
  även annan sökning
  This tool will check if a particular e-mail address is valid or not by communicating with the mail server in a real time.
  address check confirm directories e-mail email reverse verify
  in e-post > verifikation with e-post verifikation
• VerifyEmail
  samma som "Addresses"
  in e-post > verifikation with e-post verifikation

verifikation from all users