To create a Custom Email Header, choose the Setup option from the top navigation option. Click on the Custom Email Header / Create New option.


To create the Custom Email Header, complete the required fields:


Header:  Enter the email header.

Example: X-MyHeader


Value:  Enter the value of the email header. (Note: Not all dynamic content tags will work for Custom Email Headers at the moment.)

Example: {MANAGE_LINK}


So if the header is X-MyHeader and the value is {MANAGE_LINK} the following header will be inserted into emails:


X-MyHeader: http://yourdomainhere.com/a/a.php/m/12/sdrfg


Note that the above is a representative example and will differ for each installation.


Assign to new email systems:  Check this box to automatically assign this custom header to new email systems that you add.  This can be changed in the settings of each email system.


Assign to these email systems:  Check the email systems that you want to assign this custom header to.


This can be changed in the settings of each email system.