mailgun/mailgun-php

Dotenv

# Get your API key form https://app.mailgun.com/app/domains
MAILGUN_API_KEY=replace_me

Generated files

config/packages/mailgun.yaml

services:
    Mailgun\Mailgun:
        class: Mailgun\Mailgun
        factory: ['Mailgun\Mailgun', create]
        arguments: ['%env(MAILGUN_API_KEY)%']