PHPMailer is the world's most popular transport class, with an estimated 9 million users worldwide. Downloads continue at a significant pace daily. Used by many open-source projects: WordPress, Drupal ...

This is the complete documentation for v5.1.0 of the library, released on 2026-01-03.

Abstract: Nowadays, throughput has become a limiting factor in road transport. An effective means to increase the road throughput is to employ a small intervehicle time gap using automatic ...