Set a default from address

README.md

@@ -28,6 +28,15 @@ All exceptions are reported automatically. No additional code required.
 
 Please consult the [official guides](https://guides.rubyonrails.org/error_reporting.html) for an introduction to the error reporting API.
 
+## Optional configuration
+
+Set a custom from address.
+
+```ruby
+# default: "[email protected]"
+config.email_error_reporter.from = "[email protected]"
+```
+
 ## Test your setup
 
 You can use the built-in rake task `rake email_error_reporter:check` to check if everything works correctly in your setup.

lib/email_error_reporter/engine.rb

@@ -4,6 +4,7 @@ class Engine < ::Rails::Engine
 
     config.email_error_reporter = ActiveSupport::OrderedOptions.new
     config.email_error_reporter.to = []
+    config.email_error_reporter.from = "[email protected]"
 
     initializer "email_error_reporter.error_subscribe" do
       Rails.error.subscribe(Subscriber.new)

lib/email_error_reporter/error_mailer.rb

@@ -17,6 +17,7 @@ def error(error, handled:, severity:, context:, source: nil)
 
       mail(
         subject: "#{severity_to_emoji.fetch(@severity)}  #{error.class}",
+        from: Rails.application.config.email_error_reporter.from,
         to: Rails.application.config.email_error_reporter.to
       )
     end