fix: safely skip emails to members with invalid addresses#2635
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Replace the dangerous mail(mail_args(...)) pattern, which returned nil for invalid emails and caused NoMethodError crashes in ActionMailer, with a new mail_to_member helper that returns a SkippedEmail null object. Changes: - Add EmailHeaderHelper::SkippedEmail with no-op delivery methods - Add mail_to_member that validates email before calling mail() - Migrate all 8 mailers to use mail_to_member - Guard EmailDelivery#log_sent_email when mail was skipped - Remove the now-unused mail_args method - Add skip-path tests for every mailer method Fixes: https://app.rollbar.com/a/codebar-production/fix/item/codebar-production/690#detail
olleolleolle
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Jun 6, 2026
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olleolleolle
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This fixes an issue in a fun way. Thanks!
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Problem
NoMethodError: undefined method '[]' for nilcrashedWorkshopInvitationMailer#invite_coach(and other mailers) when a member's email was invalid. The root cause:EmailHeaderHelper#mail_argsreturnednilfor invalid emails, and every mailer calledmail(mail_args(...))directly, passingnilinto ActionMailer.Rollbar: https://app.rollbar.com/a/codebar-production/fix/item/codebar-production/690#detail
Changes
EmailHeaderHelper::SkippedEmailnull object with no-op delivery methodsmail_to_memberhelper that validates email before callingmail(), logs the skip, and returnsSkippedEmailwhen invalidmail(mail_args(...))tomail_to_member(...)EmailDelivery#log_sent_emailwhenmail()was never called (skips would otherwise triggerMissingTemplate)mail_argsmethodVerification
bundle exec rspec spec/mailers/ spec/helpers/email_header_helper_spec.rb— 80 examples, 0 failures