[FEATURE] Provide some steps on how to send emails via php or wp_mail for testing.

[vbmark]

About which PHP Version we are talking ?
PHP83

Is your feature request related to a problem? Please describe.
I don't think so.

Describe the solution you'd like
Some information with steps on how to send emails via php or wp_mail for testing.

Describe alternatives you've considered
I tested with MailHog in its own docker image and alternatively adding it to docker-compose-lamp's docker-compose.yml file. For example, I added:

mailhog:
   container_name: "${COMPOSE_PROJECT_NAME}-mailhog"
   image: mailhog/mailhog
   ports:
     - "8025:8025"
     - "1025:1025"
   environment:
     MH_STORAGE: maildir
     MH_MAILDIR_PATH: /tmp
   volumes:
     - "./docker/data/mail/tmp/mailhog:/tmp"

On my host OS (Debian) when I do the following at the command line:
echo "My message" | mail -s subject test@example.com

The message appears in MailHog at:
http://localhost:8025/#

In my WordPress application in the php83 Container, I am sending a test email like this:
wp_mail('test@example.com', 'Test Email', 'This is a test email from WordPress');

The message does not appear in MailHog.

I have the following in php.ini and confirmed the existence of mhsendmail:
sendmail_path = /home/me/go/bin/mhsendmail --smtp-addr mailhog:1025

And have the following in wp-config.php:

define('SMTP_HOST', 'mailhog');
define('SMTP_PORT', '1025');

I don't know what else to try so am hoping for further information on what I might be missing.

Thank you.