🇫🇷France @atovik

For my use case, all my environments require SMTP (transactional emails).

The solution that worked for me:

• install the smtp module → (drupal/smtp)
• configure the new installed module (host, port, pass ,etc)
• configure the mailsystem module and for the Drupal Symfony Mailer Lite, change the sender to "SMTP mailer"
• clear the cache
• test sending emails

after doing this, Symfony mailer lite acts only as formatter, and smtp module as sender.
All my outging emails are correctly sent, and formatted.

Hope that helps