We are using SDL Tridion 2013 SP1 HR1. The EML files generated by outbound mailer service is contains Content-Type: text/html; charset="iso-8859-1" we want to remove charset="iso-8859-1" from Content-Type header.is there any setting in outboundemail configuration file to do it?

  • Why would you want to remove it? Knowing the character set used is quite important for e-mail clients to display it correctly. Do you perhaps mean to change it to something else? Jun 20, 2019 at 14:45
  • @PeterKjaer Perhaps the right question here is to know what determines the charset of an email generated by Outbound Email. The publication used for Emails has UTF-8 defined as the encoding (Default Code Page). Emails are being generated in English and Arabic (separate emails for the 2 languages). However the generated eml files have charset=iso-8859-1 defined which causes issues with some email clients. Jun 21, 2019 at 15:54
  • Indeed, that makes a lot of sense :) I'll submit an answer... Jun 28, 2019 at 12:03

1 Answer 1


The encoding is determined by Chilkat based on the content. It is, unfortunately, a bit of a black box. Sometimes that detection fails and it picks the wrong encoding. That appears to be the case for you.

Luckily, we built in an override for just such a situation. You can set the FixedEncoding element in OutboundEmail.xml to an encoding that will work for all of your e-mails (e.g. UTF-8).

Here is a link to the documentation page for the setting: Configuring outgoing e-mail

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