SMTP-USER-ENUM

GitHub - cytopia/smtp-user-enum: SMTP user enumeration via VRFY, EXPN and RCPT with clever timeout, retry and reconnect functionality.GitHub

APT

root@oco:~$ apt search smtp-user-enum
 Sorting... Done
 Full Text Search... Done
 smtp-user-enum/parrot6,now 1.2-1parrot1 all [installed]
  Username guessing tool for the SMTP service

root@oco:~$ sudo apt install smtp-user-enum
 ...

PIPX

root@oco:~$ pipx install smtp-user-enum
 installed package smtp-user-enum 0.7.0, installed using Python 3.11.2
  These apps are now globally available
    - smtp-user-enum
  done!