I am using the official cloud docker image to setup local environment docker-development

However it cannot send out email even if I already put

environment: - ENABLE_SENDMAIL=true

Under fpm container in docker-compose.yml

2 Answers 2


This is due to docker image version incompatibility.

If you are using 'magento/magento-cloud-docker-php:7.4-fpm-1.2.4 in your fpm container, you can check the dockerfile is detecting



But if you are using 'magento/magento-cloud-docker-php:7.4-fpm-1.3.0'

You will see



which are totally different variables.

So the solution is to add a new SENDMAIL_PATH to let fpm container to know which email service should be used. Under docker-compose.yml fpm section, add the following:

      - SENDMAIL_PATH=/usr/local/bin/mhsendmail --smtp-addr="mailhog:1025"

Then you can now see your email appear in the :8025 mailhog panel.


@leo solution works, but it´s not persistent. To make it persistent, in the .docker/ folder, there is a distributable file called config.php.dist as a template for the environment configuration. Rename it to config.php and add the sendmail_path configuration there:

    'SENDMAIL_PATH' => '/usr/local/bin/mhsendmail --smtp-addr="mailhog:1025"'

Execute the ece tool to generate the docker-compose.yml file: vendor/bin/ece-docker build:compose. And you are all set!

Note 1: If you don´t have the distributable file, run vendor/bin/ece-docker build:dist. It will generate two files inside .docker/ folder: config.env and config.php.dist.

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