Seems simple enough but I haven''t been able to get it to work. The files work fine from S3 on my web app, but when I email them out via ActionMailer as attachments, see the code below, the files are corrupt. App Stack: rails 3, heroku, paperclip + s3 Here''s the code: class UserMailer < ActionMailer::Base # Add Attachments if any if @comment.attachments.count > 0 @comment.attachments.each do |a| require ''open-uri'' open("#{Rails.root.to_s}/tmp/#{a.attachment_file_name}", "wb") do |file| file << open(a.authenticated_url()).read attachments[a.attachment_file_name] File.read("#{Rails.root.to_s}/tmp/#{a.attachment_file_name}") end end end mail( :to => "#{XXXX}", :reply_to => "XXXXX>", :subject => "XXXXXX" ) a.authenticated_url() just gives me a URL to s3 to get the file (of any type), I checked this, works fine. Something to do with the way I''m saving the tempfile must be breaking the ActionMailer Attachment. Any ideas? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.