DKIM may be called as PGP successor: PGP has been used by many people for signing their emails at a time when mostly technical related people had been using the internet. Today, few people still use PGP to sign their emails, but email servers took over this part using a technology called DKIM.
Suchergebnisse mit Tag „mail“
Sending important mails leads sooner or later makes you search for your mails throughout the logs of your mailserver. Using the unique mail id assigned by the mail server makes things much easier.
Sending mails with Net::SMTP is pretty easy, but it won't show the server reply (containing the assigned transmission id).