feat: allow classic SMTP for email sending

config/env.example

@@ -82,6 +82,15 @@ MATOMO_HOST="matomo.example.org"
 MAILJET_API_KEY=""
 MAILJET_SECRET_KEY=""
 
+# Classic SMTP
+CLASSIC_SMTP_ENABLED="disabled"
+SMTP_HOST=""
+SMTP_PORT=""
+SMTP_USER=""
+SMTP_PASS=""
+SMTP_TLS=""
+SMTP_AUTHENTICATION="plain"
+
 # Alternate SMTP Provider: SendInBlue/DoList
 SENDINBLUE_CLIENT_KEY=""
 SENDINBLUE_SMTP_KEY=""

config/environments/production.rb

@@ -77,6 +77,17 @@ Rails.application.configure do
     config.action_mailer.delivery_method = :mailtrap
   elsif ENV['MAILCATCHER_ENABLED'] == 'enabled'
     config.action_mailer.delivery_method = :mailcatcher
+  elsif ENV['CLASSIC_SMTP_ENABLED'] == 'enabled'
+    config.action_mailer.delivery_method = :smtp
+    config.action_mailer.smtp_settings = {
+      address:              ENV.fetch("SMTP_HOST"),
+      port:                 ENV.fetch("SMTP_PORT"),
+      domain:               ENV.fetch("SMTP_HOST"),
+      user_name:            ENV.fetch("SMTP_USER"),
+      password:             ENV.fetch("SMTP_PASS"),
+      authentication:       ENV.fetch("SMTP_AUTHENTICATION"),
+      enable_starttls_auto: ENV.fetch("SMTP_TLS").present?
+    }
   else
     sendinblue_weigth = ENV.fetch('SENDINBLUE_BALANCING_VALUE') { 0 }.to_i
     dolist_weigth = ENV.fetch('DOLIST_BALANCING_VALUE') { 0 }.to_i