Redmine

Sorry, forgot to mention that this is the built-in feature I'm referring to:
http://www.redmine.org/wiki/redmine/RedmineReceivingEmails

I've been RTFM:ing for a bit and while my Ruby skills are very limited at the moment, it seems that implementing Base64.decode64() in some way could resolve this.

I've noticed that some clients and webmail services encode their mails with Base64 (for example Gmail), so it might be a good idea to implement decoding capabilities to Redmine.

After performing an update a few months back, Redmine was able to read email that were base64 encoded. However, after updating to 0.8.1, no more mail are coming in once again. When I look at the IMAP account, I can tell that the mail have been read but no new issue has been created from it.

I would really appreciate some help with this.

I'm using redmine 1.0.3 and I'mhaving the same problem, anybody has a solution?

Hi Alex,

You can fix it this way.
In redmine_root/app/models/mail_handler.rb, modify code as below.

def plain_text_body
  return @plain_text_body unless @plain_text_body.nil?
  parts = @email.parts.collect {|c| (c.respond_to?(:parts) && !c.parts.empty?) ? c.parts : c}.flatten
  if parts.empty?
    parts << @email
  end
  plain_text_part = parts.detect {|p| p.content_type == 'text/plain'}
  if plain_text_part.nil?
    # no text/plain part found, assuming html-only email
    # strip html tags and remove doctype directive   
-   @plain_text_body = strip_tags(@email.body.to_s)
+   @plain_text_body = strip_tags(decode_body_if_base64_encoded(plain_text_part.body).to_s)
    @plain_text_body.gsub! %r{^<!DOCTYPE .*$}, ''
  else
-   @plain_text_body = plain_text_part.body.to_s
+   @plain_text_body = decode_body_if_base64_encoded(plain_text_part.body).to_s
  end
  @plain_text_body.strip!
  @plain_text_body
end

def decode_body_if_base64_encoded(mail_body)
  (@email.header_string('Content-Transfer-Encoding') == "base64") ? Base64.decode64(mail_body) : mail_body
end

Due to lack of time, I haven't tested above code change.
But for sure Base64.decode64(mail_body) will save your day.

Refer to below example in Rails Console:

1.9.3p194 :227 > mail_body
 => "KioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq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" 
1.9.3p194 :228 > Base64.decode64(mail_body)
 => "*******************************************************************************************\nTHIS IS AN AUTOMATED EMAIL - PLEASE DO NOT REPLY.\n*******************************************************************************************\n\n\nDear New Moneybookers Customer,\n\nYou have chosen mb_test_company@taryneast.com as the email address for your new Moneybookers account. \n\nPlease verify this email address" 
1.9.3p194 :229 >