MessageSent event's `sent` property is empty

[YutaInouePH]

Laravel Version

12.16.0

PHP Version

8.3.19

Database Driver & Version

MySQL 8.0.32, php:8.3-fpm-bullseye

Description

The MessageEvent class has a property SentMessage $sent – The message that was sent., but when trying to access via our own listeners, it is shown as an empty object.

Steps To Reproduce

Repository: https://github.com/YutaInouePH/bug-report

Steps to reproduce:

1. Clone YutaInouePH/bug-report repository
2. composer install
3. copy .env

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:AgF1l7QhT7Q8d3YbbyyClAYLTL5KhzwPtcYoqbIiVvk=
APP_DEBUG=true
APP_URL=http://localhost

APP_LOCALE=en
APP_FALLBACK_LOCALE=en
APP_FAKER_LOCALE=en_US

APP_MAINTENANCE_DRIVER=file
# APP_MAINTENANCE_STORE=database

PHP_CLI_SERVER_WORKERS=4

BCRYPT_ROUNDS=12

LOG_CHANNEL=stack
LOG_STACK=single
LOG_DEPRECATIONS_CHANNEL=null
LOG_LEVEL=debug

DB_CONNECTION=sqlite
# DB_HOST=127.0.0.1
# DB_PORT=3306
# DB_DATABASE=laravel
# DB_USERNAME=root
# DB_PASSWORD=

SESSION_DRIVER=database
SESSION_LIFETIME=120
SESSION_ENCRYPT=false
SESSION_PATH=/
SESSION_DOMAIN=null

BROADCAST_CONNECTION=log
FILESYSTEM_DISK=local
QUEUE_CONNECTION=database

CACHE_STORE=database
# CACHE_PREFIX=

MEMCACHED_HOST=127.0.0.1

REDIS_CLIENT=phpredis
REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=6379

MAIL_MAILER=log
MAIL_SCHEME=null
MAIL_HOST=127.0.0.1
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
MAIL_FROM_ADDRESS="hello@example.com"
MAIL_FROM_NAME="${APP_NAME}"

AWS_ACCESS_KEY_ID=
AWS_SECRET_ACCESS_KEY=
AWS_DEFAULT_REGION=us-east-1
AWS_BUCKET=
AWS_USE_PATH_STYLE_ENDPOINT=false

VITE_APP_NAME="${APP_NAME}"

4. php artisan serve
5. Access the top page (/)
6. The storage/logs/laravel.log shows the email details

[2025-06-03 07:53:31] local.DEBUG: From: Laravel <hello@example.com>
To: test@test.com
Subject: Test Email
MIME-Version: 1.0
Date: Tue, 03 Jun 2025 07:53:31 +0000
Message-ID: <ca46c25d6a07b5c7994e808c1dbe4cab@example.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable

This is a test email

but the EmailSentListener's MessageSent object shows like this.

 local.INFO: Email sent {"event":{"Illuminate\\Mail\\Events\\MessageSent":{"sent":[],"data":{"mailer":"log","message":[]}}},"sent":{"Illuminate\\Mail\\SentMessage":[]},"data":{"mailer":"log","message":{"Illuminate\\Mail\\Message":[]}}}

Expected to see some raw message within the MessageSent parameter.

[crynobone]

Hey there, thanks for reporting this issue.

We'll need more info and/or code to debug this further. Can you please create a repository with the command below, commit the code that reproduces the issue as one separate commit on the main/master branch and share the repository here?

Please make sure that you have the latest version of the Laravel installer in order to run this command. Please also make sure you have both Git & the GitHub CLI tool properly set up.

laravel new bug-report --github="--public"

Do not amend and create a separate commit with your custom changes. After you've posted the repository, we'll try to reproduce the issue.

Thanks!

[YutaInouePH]

Hi @crynobone.

Thanks for responding. I've already created the repository with the said command.
https://github.com/YutaInouePH/bug-report

The latest commit is here I put the reproduction code.

Thanks!

[rodrigopedra]

It actually works as expected.

The \Illuminate\Mail\SentMessage class does not implement \JsonSerializable, or \Stringable, and also doesn't have any public properties.

You can see the sent property from your logging is filled with the Illuminate\Mail\SentMessage instance, but then it is empty as Laravel can't figure out what to output.

{
    "event": ...,
    "sent": {
        "Illuminate\\Mail\\SentMessage": []
    },
    "data": ...
}

You can try this on your sample App\Listeners\EmailSentListener class:

Log::channel('stderr')->info('Email sent', [
    'event' => $event,
    'sent' => $event->sent->getSymfonySentMessage()->getMessage()->toString(),
    'data' => $event->data,
]);

To get the original message output in the logs.

[rodrigopedra]

Another option is to send a PR to make \Illuminate\Mail\SentMessage "loggable" (e.g. add a __toString() method, or implement the \JsonSerializable interface.

[YutaInouePH]

@rodrigopedra
Thank you very much, I was able to confirm that using $event->sent->getSymfonySentMessage()->getMessage()->toString(), will output the original message.