simonbaese - blog: Drupal: Asynchronously send emails with Symfony Mailer Queue

Recently, we built a queue worker to send emails asynchronously, meeting a client's unique requirements to ensure email delivery. There is a lot of movement in the Drupal contribution space to innovate on the mailer. Traditionally, Drupal uses a plain PHP mailer to deliver transactional emails such as sign-up confirmation or password reset instructions. Nowadays, many websites rely on the contribution module Drupal Symfony Mailer to use the framework mailer by Symfony and leverage the flexible setup of mailer policies, transport, and HTML theming with templates. What needs to be added to the mix are easy-to-implement ways to send emails asynchronously. Today, we announce the first stable release of the new contribution module Symfony Mailer Queue.