Problem sending multipart mail using ActionMailer

Question

I'm using the following code to send emails in rails:

class InvoiceMailer < ActionMailer::Base    def invoice(invoice)     from          CONFIG[:email]     recipients    invoice.email     subject       "Bevestiging Inschrijving #{invoice.course.name}"     content_type  "multipart/alternative"      part "text/html" do |p|       p.body = render_message 'invoice_html', :invoice => invoice     end      part "text/plain" do |p|       p.body = render_message 'invoice_plain', :invoice => invoice     end      pdf = Prawn::Document.new(:page_size => 'A4')     PDFRenderer.render_invoice(pdf, invoice)     attachment :content_type => "application/pdf", :body => pdf.render, :filename => "factuur.pdf"      invoice.course.course_files.each do |file|       attachment :content_type => file.content_type, :body => File.read(file.full_path), :filename => file.filename     end   end  end 

It seems fine to me, and the emails also show up like they should in the Gmail web-interface. In Mail (the Apple program), however, I get just 1 attachment (where there should be 2) and there is no text. I just can't seem to figure out what's causing it.

I copied the email from the logs:

  Sent mail to [email protected]  From: [email protected] To: [email protected] Subject: Bevestiging Inschrijving Authentiek Spreken Mime-Version: 1.0 Content-Type: multipart/alternative; boundary=mimepart_4a5b035ea0d4_769515bbca0ce9b412a   --mimepart_4a5b035ea0d4_769515bbca0ce9b412a Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: Quoted-printable Content-Disposition: inline                 
Dear sir
    =  --mimepart_4a5b035ea0d4_769515bbca0ce9b412a Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: Quoted-printable Content-Disposition: inline  Dear sir  * Foo=  --mimepart_4a5b035ea0d4_769515bbca0ce9b412a Content-Type: application/pdf; name=factuur.pdf Content-Transfer-Encoding: Base64 Content-Disposition: attachment; filename=factuur.pdf  JVBERi0xLjMK/////woxIDAgb2JqCjw8IC9DcmVhdG9yIChQcmF3bikKL1By b2R1Y2VyIChQcmF3bikKPj4KZW5kb2JqCjIgMCBvYmoKPDwgL0NvdW50IDEK ... ... ... MCBuIAp0cmFpbGVyCjw8IC9JbmZvIDEgMCBSCi9TaXplIDExCi9Sb290IDMg MCBSCj4+CnN0YXJ0eHJlZgo4Nzc1CiUlRU9GCg==  --mimepart_4a5b035ea0d4_769515bbca0ce9b412a Content-Type: application/pdf; name=Spelregels.pdf Content-Transfer-Encoding: Base64 Content-Disposition: attachment; filename=Spelregels.pdf  JVBERi0xLjQNJeLjz9MNCjYgMCBvYmoNPDwvTGluZWFyaXplZCAxL0wgMjEx NjYvTyA4L0UgMTY5NTIvTiAxL1QgMjEwMDAvSCBbIDg3NiAxOTJdPj4NZW5k ... ... ... MDIwNzQ4IDAwMDAwIG4NCnRyYWlsZXINCjw8L1NpemUgNj4+DQpzdGFydHhy ZWYNCjExNg0KJSVFT0YNCg==  --mimepart_4a5b035ea0d4_769515bbca0ce9b412a--  

Answer 1

I suspect the issue is you're defining the overall email as multipart/alternative, suggesting each part is just an alternate view of the same message.

I use something like the following to send mixed html/plain emails with attachments, and it seems to work OK.

class InvoiceMailer < ActionMailer::Base    def invoice(invoice)     from          CONFIG[:email]     recipients    invoice.email     subject       "Bevestiging Inschrijving #{invoice.course.name}"     content_type  "multipart/mixed"      part(:content_type => "multipart/alternative") do |p|       p.part "text/html" do |p|         p.body = render_message 'invoice_html', :invoice => invoice       end        p.part "text/plain" do |p|         p.body = render_message 'invoice_plain', :invoice => invoice       end     end      pdf = Prawn::Document.new(:page_size => 'A4')     PDFRenderer.render_invoice(pdf, invoice)     attachment :content_type => "application/pdf", :body => pdf.render, :filename => "factuur.pdf"      invoice.course.course_files.each do |file|       attachment :content_type => file.content_type, :body => File.read(file.full_path), :filename => file.filename     end   end  end