adjust from email

app/models/user.rb

@@ -49,6 +49,9 @@ class User < ApplicationRecord
 
   EMAIL_REGEXP = /[^@;,<>\s]+@[^@;,<>\s]+/
 
+  FULL_EMAIL_REGEXP =
+    /\A[a-z0-9][\.']?(?:(?:[a-z0-9_-]+[\.\+'])*[a-z0-9_-]+)*@(?:[a-z0-9]+[\.-])*[a-z0-9]+\.[a-z]{2,}\z/i
+
   has_one_attached :signature
   has_one_attached :initials
 

lib/action_mailer_configs_interceptor.rb

@@ -18,7 +18,11 @@ module ActionMailerConfigsInterceptor
     if Rails.env.production? && Rails.application.config.action_mailer.delivery_method
       from = ENV.fetch('SMTP_FROM').to_s.split(',').sample
 
-      message.from = from
+      if from.match?(User::FULL_EMAIL_REGEXP)
+        message[:from] = message[:from].to_s.sub(User::EMAIL_REGEXP, from)
+      else
+        message.from = from
+      end
 
       if from == 'DocuSeal <info@docuseal.com>'
         message.body.instance_variable_set(

lib/params/base_validator.rb

@@ -2,7 +2,7 @@
 
 module Params
   class BaseValidator
-    EMAIL_REGEXP = /\A[a-z0-9][\.']?(?:(?:[a-z0-9_-]+[\.\+'])*[a-z0-9_-]+)*@(?:[a-z0-9]+[\.-])*[a-z0-9]+\.[a-z]{2,}\z/i
+    EMAIL_REGEXP = User::FULL_EMAIL_REGEXP
 
     InvalidParameterError = Class.new(StandardError)