Rails Action Mailer

config/environments/production.rb

Gmail



config.action_mailer.delivery_method = :smtp
config.action_mailer.default_url_options = { :host => 'xxx.xxxxx.xxx' }
config.action_mailer.smtp_settings = {
:address              => 'smtp.gmail.com',
:port                 => 587,
:user_name            => ENV["gmail_username"],
:password             => ENV["gmail_password"],
:domain               => 'xxx.xxxxx.xxx',
:authentication       => 'plain',
:enable_starttls_auto => true  }

Mailgun



config.action_mailer.delivery_method = :smtp
config.action_mailer.default_url_options = { :host => 'xxx.xxxxx.xxx' }
config.action_mailer.smtp_settings = {
:address              => ENV['MAILGUN_SMTP_SERVER'],
:port                 => ENV['MAILGUN_SMTP_PORT'],
:user_name            => ENV['MAILGUN_SMTP_LOGIN'],
:password             => ENV['MAILGUN_SMTP_PASSWORD'],
:domain               => 'xxx.xxxxx.xxx',
:authentication       => 'plain',
:enable_starttls_auto => true  }

Rails Action Mailer

Gmail

Mailgun

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