Rails - Oct 2006 - ActionMailer Multipart messages broken for Quoted-printable

I still do not have a blog up so I will post here.  May Google record 
this so that others can find my answer and save themselves a couple 
hours of debugging....

If you use the default encoding for multipart mime mail, ActionMailer or 
TMail or something messes up your HTML tags and inserts a "3D" string 
between every attribute="" so that you get tags looking like this:

<style type=3D"text/css">

You may never notice because your email program will render it anyway 
but it has deleterious effects on your delivery and spam ranking as this 
is not valid HTML.

I traced the code a bit hoping to make a fix but eventually, in the 
course of testing, found a workaround.

The workaround is to explicitly specify multipart messages per the 
instructions in the API for ActionMailer::Base and then Base64 encode 
the HTML portion of your email.   (Implicit multipart and 
Quoted-printable for html multipart are broken)

ie.

    content_type "multipart/alternative"
    part "text/plain" do |p|
      p.body =
render_message(''marketing_email.text.plain.rhtml'', @body)
    end
    part "text/html" do |p|
      p.body =
render_message(''my_important_email.text.html.rhtml'',
@body)
      p.transfer_encoding = "base64"   # VERY IMPORTANT
    end

Hope this helps somebody.

Best,

Steven

-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
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-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk
-~----------~----~----~----~------~----~------~--~---

Steven Talcott Smith wrote:
> I still do not have a blog up so I will post here.  May Google record 
> this so that others can find my answer and save themselves a couple 
> hours of debugging....
> 
> If you use the default encoding for multipart mime mail, ActionMailer or 
> TMail or something messes up your HTML tags and inserts a "3D"
string
> between every attribute="" so that you get tags looking like
this:
> 
> <style type=3D"text/css">
> 
Is this really wrong? The = character is illegal in quoted printable, 
and so must be represented as =3D

Fred

-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
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-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk
-~----------~----~----~----~------~----~------~--~---